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a survey of "normal" broiler mortality in east anglia.a survey of routine mortality was carried out on six different broiler sites. a total of 535 individual post mortem examinations was carried out. the chief cause of mortality on all six sites was colisepticaemia. fatty liver and kidney syndrome caused significant loss on three of the six sites and on three of them a low incidence of an oedema syndrome was of interest. salmonella senftenberg was isolated during the first four weeks from the intestines of chickens from five of the six sites but on ...1977335632
salmonella serotypes encountered in animal feed additives in lebanon.animal feed-additive samples (n = 300) were examined for the presence of salmonellae, using the selenite-f broth-enrichment method followed by subculturing on salmonella-shigella and brilliant green agar with sulfadiazine selective agar plates. samples consisted of a variety of feed additives: 119 bone meal samples, 77 meat meal samples, 40 fish meal samples, and 64 miscellaneous meal samples. results of examination found 49 (41.2%) of the bone meal samples, 6 (7.8%) of the meat meal samples and ...1978365032
alternation of low and high affinities of secreted and cell-bound antibodies during the anamnestic response of rabbits to salmonella senftenberg microorganisms.we have investigated at the cellular level the variations in affinities of secreted antibodies and of cell receptors during the anamnestic response of rabbits, by using an immunization schedule made up of administrations, over successive intervals of 40 days, of salmonella senftenberg vaccine. affinities of free and membrane-bound antibodies biosynthesized at a given time were measured by inhibition of haemolytic plaque-forming cells (pfc) and rosette-forming cells (rfc) with spleen, lymph node, ...1979368963
the effect of compounds which degrade hydrogen peroxide on the enumeration of heat-stressed cells of salmonella senftenberg.greater than 90% of heat-stressed cells of salmonella senftenberg failed to grow on trypticase soy agar. adding to this medium compounds which are capable of degrading hydrogen peroxide allowed growth of the heat-injured cells. these compounds did not stimulate growth of heated cells of streptococcus faecium, an organism which does not possess catalase.1978679073
destruction of salmonella on poultry meat with lysozyme, edta, x-ray, microwave and chlorine.lysozyme, ethylenediaminetetracetic acid, chlorine, x-irradiation and microwaves were used in experimental attempts to eliminate salmonella senftenberg 775w or salmonella typhimurium from turkey drumsticks and whole carcasses. turkey drumsticks or whole carcasses were artificially contaminated with s. senftenberg 775w or s. typhimurium in concentrations ranging between 5 x 10(5) to 8 x 10(5) viable cells per ml. of contaminating fluid. after each treatment, samples were cultured, plated, and tes ...1975810784
minimal medium recovery of thermally injured salmonella senftenberg 4969. 1976939735
age-dependent resistance of chickens to salmonella in vitro: phagocytic and bactericidal activities of splenic phagocytes.the phagocytic and bactericidal activities to salmonella pullorum (strain 9-25) or salmonella senftenberg (strain 99d) were examined in chicken splenic phagocytes from 0-day-old to 2-month-old chickens. the phagocytic activity against s pullorum increased in splenic phagocytes from chickens older than 7 days, but significant changes in activity against s senftenberg were not observed during the experimental period. the bactericidal activity of splenic phagocytes against s senftenberg was higher ...1976962210
salmonella survival on pecans as influenced by processing and storage conditions.survival of salmonella senftenberg 775w, s. anatum, and s. typhimurium during exposure to currently practiced, as well as abusive, pecan processing and storage conditions was studied. thermal treatments normally carried out during the processing of pecans are inadequate to consistently destroy salmonellae in highly contaminated inshell nuts. pecan nut packing tissue was toxic to salmonellae, thus affording some protection against high initial contamination and subsequent survival of the organism ...19751098573
asymptomatic salmonella senftenberg carriage in a neonatal ward.during a 23-day period in april 1991, nine infants in a neonatal ward were found to be colonized with salmonella senftenberg. all were asymptomatic on detection and all except one (who developed septic ileus) remained asymptomatic on follow-up. the affected babies were isolated and subsequently discharged from the ward as soon as possible. these measures, along with emphasis on handwashing and intensification of cleaning and disinfection, were able to prevent spread to other babies. despite exte ...19921363111
salmonella senftenberg carrier state in a neonate following septicemia. 19921592510
sandwich enzyme immunoassays for detection of salmonella typhi.enzyme immunoassays were developed using monoclonal antibodies raised against somatic (o), flagellar (h) and capsular (vi) antigens of salmonella typhi. the assay based on anti-o monoclonal antibodies could specifically detect s. typhi and soluble lipopolysaccharide (lps) isolated from s. typhi. anti-h moabs detected motile s. typhi and soluble flagellar antigen. monoclonal antibodies against capsular polysaccharide could detect vi-containing s. typhi as well as soluble vi antigen. the three ass ...19901693382
differentiation of salmonella senftenberg into biogroups.ninety-six strains of salmonella senftenberg, isolated between 1984 and 1986 from different parts of england and wales, were tested for their biochemical reactions and biotyped according to the method of duguid and others (1975). nine biogroups were identified on the basis of their metabolism of l-tartrate, d-tartrate, bitter's xylose and stern's glycerol. in addition, fumaric, oxalic, succinic, glutaric, malonic, maleic, l-malic, l-aspartic, lactic and formic acids were used but did not increas ...19911788918
[kinetics of the inactivation of salmonella during thermal disinfection of liquid manure].technical processes for thermal liquid manure disinfection usually reach temperatures between 50 degrees c and 70 degrees c. the destruction of important infectious micro-organisms can be expected in this temperature range. the purpose of the investigations reported here was to study the thermal resistance of salmonellae during heat treatment of liquid manure. salmonella senftenberg 775w survived much longer than each of 12 other strains from 8 different salmonella serovars. resulting from a reg ...19911789013
decreased salmonella colonization in turkey poults inoculated with anaerobic cecal microflora and provided dietary lactose.the effect of intracloacal inoculation with anerobic cultures of cecal microflora and addition of lactose to the feed on salmonella senftenberg cecal colonization was evaluated in turkey poults. one-day-old poults were divided into four groups and provided 1) no anaerobic cultures, no lactose (control), 2) anaerobic cultures, 3) 5% lactose in the feed, or 4) anaerobic cultures and lactose. all groups were challenged orally with 10(6) s. senftenberg at 3 days of age. salmonella senftenberg growth ...19911886842
nosocomial infection due to salmonella senftenberg (case report).besides various clinical manifestations and made of spread of salmonella infections, isolation of s. senftenberg a rare serotype from patients hospitalised for surgical procedures indicates nosocomial infection. a prolonged stay in hospital with surgical trauma facilitated the organism to cause infection in the compromised host.19911916974
[disinfection studies with salmonella senftenberg using egg shells as germ carriers].the present investigation was carried out to study the efficiency of 8 chemical disinfectants on salmonella senftenberg in the presence or absence of serum (organic matter) using egg shell as bacterial carrier. the most of the tested disinfectants were effective in the used concentrations after a working time of 60 min. at room temperature. some quaternary ammonium compounds proved to be not effective.19912065609
salmonella senftenberg outbreak in a neonatal unit.salmonella senftenberg was isolated from the stools of 35 newborns between june, 1987 and september, 1988. twenty nine (82.8%) babies were preterms and twenty six (74%) babies were less than 2,000 grams in weight. all of them were symptomatic within 6 days of life, 74.3% (26) within 4 days. all of them had loose stools and weight loss. other features were sclerema, jaundice and paralytic ileus. the organism was sensitive to nalidixic acid (100%), amikacin (94.6%), gentamicin (72.9%), cephaloridi ...19902361760
[changes in the specificity of antibodies appearing in the beginning of immunization by "salmonella senftenberg" (author's transl)]. 19744142373
viability of staphylococcus aureus, salmonella typhimurium and salmonella senftenberg heated and recovered on a solid medium of controlled water activity. 19724555285
enteric bacterial growth rates in river water.enteric bacteria, including stocked strains of pathogenic species and organisms naturally present in the stream, were capable of growth in a chemostat with autoclaved river water taken 750 m below a sewage outfall. maximal specific growth rates for all organisms occurred at 30 c, whereas culture generation times ranged between 33.3 and 116 hr. of the six laboratory strains of enteric species used, escherichia coli and enterobacter aerogenes grew at generation times of 34.5 and 33.3 hr, respectiv ...19724561100
the prevalence of salmonellas in mink.the mean isolation rates of salmonellas from the mesenteric lymph nodes and faeces of healthy mink were 16.7% of 618 animals from three farms and 3.9% of 772 animals from four farms respectively. salmonella senftenberg was the most commonly isolated serotype. s. typhimurium, s. dublin, s. livingstone, s. menston, s. enteritidis, s. bredeney and s. infantis were also seen.the prevalence of salmonellosis in 316 dead mink from 12 farms was 0.6%.the epidemiological aspects are discussed.19744593742
the effect of moisture and storage temperature on a salmonella senftenberg 775w population in meat and bone meal. 19694907436
thermal inactivation of salmonella senftenberg 775w in poultry meat. 19704920795
salmonella senftenberg in the sunderland area. 19695278162
epidemiological studies on salmonella senftenberg. i. relations between animal foodstuff, animal and human isolations. 19695278163
epidemiological studies on salmonella senftenberg. ii. infections in farm animals. 19695278164
heat resistance of salmonella typhimurium and salmonella senftenberg 775 w in chicken meat. 19655324389
thermal resistance of smooth and rough derivatives of salmonella senftenberg 775 w. 19685725357
thermal resistance of salmonella senftenberg 775w in dry animal feeds. 19695812092
transmission of lethal salmonella senftenberg from mother's breast-milk to her baby. 19957677418
ciprofloxacin resistance among multidrug resistant strains of salmonella senftenberg in india. 19957735073
salmonella senftenberg: epidemics in india and present status. 19947875809
salmonella senftenberg septicemia: a nursery outbreak. 19938288336
nosocomial outbreak of gastroenteritis due to salmonella senftenberg.we describe a prolonged nosocomial outbreak of salmonella senftenberg, an uncommon human pathogen. we detected 22 cases of infection due to s. senftenberg that occurred from march 1993 through november 1994 and involved 18 patients and four healthy employees. all infected persons had consumed food prepared by the hospital kitchen. the estimated attack rate for the period of the outbreak was 0.19-0.23 cases per 100,000 meals served. infection control interventions included observation of food pre ...19968909836
ctnscr94, a conjugative transposon found in enterobacteria.conjugational transposons are important for horizontal gene transfer in gram-positive and gram-negative bacteria, but have not been reported yet for enteric bacteria. salmonella senftenberg 5494-57 has previously been shown to transfer by conjugation genes for a sucrose fermentation pathway which were located on a dna element called scr-94. we report here that the corresponding scr genes for a phosphoenolpyruvate-dependent sucrose:phosphotransferase system and a sucrose metabolic pathway are loc ...19979079891
bacteriology of burns.a retrospective study was undertaken at university college of medical sciences and guru teg bahadur hospital, delhi, to examine the bacterial isolates from the burns unit and to determine the antibiograms of the isolates to commonly used antimicrobial agents. a total of 600 pus samples from as many patients received, over a period of 5 years (june 1993-june 1997) yielded 920) isolates. pseudomonas spp. was the most common (36%) followed by staphylococcus aureus (19%), klebsiella spp. (15.54%), p ...19989688200
ciprofloxacin-resistant salmonella senftenberg in north india. 199910063756
pleuro pulmonary infection with salmonella group e.a patient was admitted with a history of cough, shortness of breath and fever. after investigations, he was found to have a left-sided pneumonia with pleural effusion. culture of the patient's sputum, pleural fluid and blood revealed salmonella senftenberg. the patient was started on antibiotics according to the sensitivity report and responded to therapy. the past history revealed attempt at suicide by the intake of corrosive acid, which caused an esophageal stricture. the leak of gastric conte ...199910459484
an outbreak of extended-spectrum, beta-lactamase-producing salmonella senftenberg in a burns ward.a strain of salmonella senftenberg resistant to ceftazidime, gentamicin, chloramphenicol and ciprofloxacin was isolated from burn wounds of eight patients on a burns ward of a hospital in delhi, india. the organism, which had probably been spread from patient to patient on staff hands, produced the extended-spectrum beta-lactamase shv-5 and the aminoglycoside-modifying enzymes aac(3)ii + aac(6'). the strain was not isolated from stool cultures of any of the patients or staff, apart from the inde ...19989868622
factors influencing inactivation of salmonella enteritidis in hard-cooked eggs.the inside of a hen's egg, once considered sterile, is now known to occasionally harbor salmonella enteritidis. at least two recent outbreaks of salmonellosis in which salmonella enteritidis pt34 was involved have been associated with hard-cooked eggs. this study was undertaken to compare d56 degrees c values of salmonella senftenberg 775w and six strains of salmonella enteritidis isolated from outbreaks associated with eggs. d56 degrees c values for salmonella enteritidis in liquid egg yolk ran ...200010643767
thermal inactivation of escherichia coli o157:h7, salmonella senftenberg, and enzymes with potential as time-temperature indicators in ground turkey thigh meat.the usda food safety and inspection service has proposed to amend cooking regulations to require that any thermal process used for poultry products be sufficient to cause a 7 d reduction in salmonellae. several enzymes have been suggested as potential indicators of heat processing in poultry, yet no relationship between the inactivation rates of these enzymes and salmonellae had been determine. the thermal inactivation kinetics of endogenous muscle proteins. escherichia coli o157:h7 and salmonel ...19989708276
influence of different factors on the inactivation of salmonella senftenberg by pulsed electric fields.the influence of growth phase, cell concentration, ph and conductivity of treatment medium on the inactivation of salmonella senftenberg by high electric field pulses (help) was studied. cells were more resistant to help treatments at the beginning of the logarithmic phase and at the stationary phase. microbial inactivation was not a function of the initial cell concentration. at constant input voltage, electric field strength obtained in the treatment chamber depended on medium conductivity. at ...200010791733
salmonella senftenberg outbreak. 19989613685
national outbreak of salmonella senftenberg associated with infant food.eight cases of salmonella senftenberg infection in infants were identified in the first half of 1995 in england, five were indistinguishable s. senftenberg strains. a case-control study showed an association between illness and consumption of one brand of baby cereal (p = 0.03). the cereal manufacturer reported isolating s. senftenberg in june 1994 from an undistributed cereal batch. outbreak strains and the cereal strain were all plasmid-free in contrast to other human isolates of s. senftenber ...19989593480
review of studies on the thermal resistance of salmonellae.heat resistance data for different serotypes of salmonella enterica in different food products and laboratory media are reviewed. from all d-values reported, the highest heat resistance of salmonella was in liquid eggs and liquid egg yolks. the equation from a line drawn through the highest d-values, and above all values reported, was log d-value = 11.7 - 0.188t degrees c. from this equation, the calculated z-value was 5.3 degrees c (9.5 degrees f), and a process at 71degrees c (160 degrees f) w ...200010852574
a plasmid-mediated cmy-2 beta-lactamase from an algerian clinical isolate of salmonella senftenberg.multiresistance to antibiotics including beta-lactams, e.g. cefoxitin, was transferred by conjugation to escherichia coli strain c1a from a clinical isolate of salmonella senftenberg recovered from stools of an algerian child. the susceptibility pattern to beta-lactams was similar to the profile mediated by an ampc-type beta-lactamase. by biochemical analysis, typical ampc-type enzyme substrate and inhibition profiles were obtained. finally, an ampc plasmid-encoded beta-lactamase gene was cloned ...19979231418
naturally occurring deletions in the centisome 63 pathogenicity island of environmental isolates of salmonella spp.we have identified several environmental isolates of salmonella senftenberg and s. litchfield which carry a deletion encompassing a vast segment of the centisome 63 region of the salmonella chromosome. the deletion includes the entire inv, spa, and hil loci, which are required for entry of salmonella spp. into mammalian cells. consequently, these isolates were found to be markedly deficient in the ability to enter cultured epithelial cells. in contrast, no deletions were found in the correspondi ...19979119461
isolation of salmonella senftenberg bacteriophages.a total of 61 bacteriophages were isolated from 100 strains of salmonella senftenberg. six bacteriophages were selected for typing purposes which were specific for s. senftenberg. five phages, sasl1 to sasl5 were morphologically similar; phage sasl6 was morphologically different from the others. these phages fall into two morphological groups none of which correspond to the known tailed enterobacterial phage species. hence, two new phage species represented by sasl1 and sasl6 are proposed.19979055494
transferable drug resistance in salmonella senftenberg.six salmonella senftenberg strains were isolated from blood samples of patients clinically diagnosed to be suffering from enteric fever during the recent outbreak of enteric fever in and around calcutta. all of them were multidrug resistant including chloramphenicol. the minimum inhibitory concentration (mic) of the drugs in which they were resistant, were well above the normal level. all these strains were sensitive to cephalexin, gentamicin, furazolidone and ciprofloxacin. the transferable dru ...19938354565
survival of salmonella senftenberg and salmonella typhimurium in glassy and rubbery states of gelatin.salmonella senftenberg and salmonella typhimurium survived the production of gelatin sheets containing nutrient broth although there was some evidence of cell damage. both strains survived but did not grow in glassy states with an a(w) of 0.45-0.28 and rubbery states with an a(w) of 0.93-0.96 for at least 28 d. survival was less in intermediate states with an a(w) between 0.55 and 0.74. the results suggest that salmonellas should be excluded from glassy state products in order to prevent salmone ...19948200861
low molecular weight milk whey components protect salmonella senftenberg 775w against heat by a mechanism involving divalent cations.to investigate which components of milk increase the heat resistance of salmonella senftenberg 775w, and to explore the mechanisms that could be involved in this protective effect.200111722665
sources and movement of salmonella through integrated poultry operations: a multistate epidemiological investigation.the prevalence of salmonella from numerous sources in 32 integrated broiler operations of high- and low-performing broiler houses was characterized from four states across four seasons. previous studies of salmonella in broilers have been limited in scope, offering only a snapshot of pathogen prevalence as seen on a small number of individual farms. twenty-six different sample types were collected from the hatchery to the end of processing, and salmonella was found in all sample types. a total o ...200111726145
development of a conjoint phage typing & biotyping schema for salmonella enterica serovar senftenberg (s. senftenberg) & the correlation of biotypes with phage types.a total of 287 strains of s. senftenberg received from various parts of india during 1969 to 1992 were phage typed using six lysogenic phages. the typability was 90.3 per cent and 14 different phage types could be defined excluding a small group of untypable strains. a biotyping scheme was developed utilising six characters and 13 biotypes could be defined. stern's glycerol medium proved to be the best discriminatory medium. diversity indeces of phage typing and biotyping schemes were 0.868 and ...19947829162
thermal lethality of salmonella senftenberg and listeria innocua in fully cooked and packaged chicken breast strips via steam pasteurization.fully cooked chicken breast strips were surface inoculated to contain 9 log10 (cfu/g) salmonella senftenberg or listeria innocua. the inoculated products were vacuum packaged in 0.2-mm-thick barrier bags (241 by 114 mm), then steam pasteurized at 88 degrees c in a continuous process for 26 to 40 min or in a batch process for 33 to 41 min. after the treatments, the products were analyzed for the survivors of salmonella or listeria. the models were developed to correlate the surviving rate of salm ...200111770644
[survival of salmonellas and ascaris eggs during sludge utilization in forestry (author's transl)].salmonella senftenberg survived in sewage sludge after a single application in summer in experimental plots of 11 different forest stands between 424 and 820 days. after application of infected sludge in winter the survival times were between 104 and 350 days. salmonelles adsorbed to germ carriers located on or below the sludge layers survived for a shorter time than those germs which were suspended into the sludge. ascaris eggs survived not longer than between 78 and 107 days. it is therefore r ...19817200703
salt extends the upper temperature limit for growth of food-poisoning bacteria.inclusion of nacl into the growth medium raised the upper temperature limit of growth of the following organisms: staphylococcus aureus (two strains), salmonella senftenberg, s. typhimurium, escherichia coli, streptococcus faecalis, bacillus cereus, clostridium sporogenes, c. perfringens (two strains). the magnitude of the response varied with the culture, the largest being 3.5 degrees with b. cereus cells. the spores of b. cereus were not protected by salt but clostridial spores behaved as the ...19816796247
thermal lethality of salmonella senftenberg and listeria innocua on fully cooked and vacuum packaged chicken breast strips during hot water pasteurization.seven log10 cfu of salmonella senftenberg or listeria innocua were surface inoculated on fully cooked chicken breast strips. the inoculated strips (227 or 454 g) were vacuum packaged in 0.2-mm-thick pouches (114 by 114 mm and 241 by 114 mm, respectively). the products were then heat treated in a hot water cooker at 88 degrees c for 0 to 40 min. after heat treatment, salmonella senftenberg and l. innocua survivors were enumerated. increasing treatment time increased the thermal lethality for salm ...200212380739
initial evaluation of the effect of butylated hydroxytoulene upon salmonella senftenberg 775w. 19676081766
antimicrobial resistance of salmonella serotypes isolated from slaughter-age pigs and environmental samples.the aim of this study was to determine the antimicrobial resistance patterns of salmonella strains isolated from slaughter-age pigs and environmental samples collected at modern swine raising facilities in brazil. seventeen isolates of six serotypes of salmonella enterica subsp. enterica were isolated out of 1,026 collected samples: salmonella typhimurium (1), salmonella agona (5), salmonella sandiego (5), salmonella rissen (1), salmonella senftenberg (4), and salmonella javiana (1). resistance ...200212523640
thermal resistance of salmonellae and staphylococci in foods.the heat-resistant salmonella senftenberg 775w and two strains of staphylococcus aureus were tested at temperatures up to 68.3 c (71.1 c for s. senftenberg) in four different media. from the survival data, decimal reduction times (d values) were calculated for each set of conditions, and decimal reduction time curves were constructed for each bacterial strain in each medium. slopes of decimal reduction time curves (z(d)) ranged from 4.52 to 6.38 c with a single exception. there was no statistica ...19665970469
identification of salmonella serovars isolated from live molluscan shellfish and their significance in the marine environment.a study on the presence of salmonella spp. in live molluscs was performed, which included a description of the different serovars isolated and their relationship to the marine environment. a total of 2,980 samples of shellfish from galicia (n.w. spain) were tested for the presence of salmonella spp. between september 1998 and august 2001. the overall incidence of salmonella was 1.8% and showed a slight rise during the 3 years of the study. mussels and oysters presented a higher incidence than cl ...200312597481
heat resistance of salmonella: the uniqueness of salmonella senftenberg 775w.of approximately 300 cultures of salmonella, representing 75 different serotypes, none was found to be as heat-resistant as s. senftenberg 775w. however, s. blockley 2004 was 5 times more heat-resistant and s. senftenberg 775w was 30 times more heat-resistant than s. typhimurium tm-1, the reference strain in this study. all other strains of salmonella tested, including 19 strains of s. senftenberg and 7 strains of s. blockley, had decimal reduction times at 57 c of about 1 min, equivalent to tha ...19695774764
predicting thermal inactivation in media of different ph of salmonella grown at different temperatures.the influence of the growth temperature and the ph of the heating medium on the heat resistance at different temperatures of salmonella typhimurium atcc 13311 was studied and described mathematically. the shift of the growth temperature from 10 to 37 degrees c increased heat resistance of s. typhimurium fourfold. the ph of the heating medium at which heat resistance was maximum was ph 6 for cells grown at 37 degrees c, but changed with growth temperature. the alkalinization of the heating medium ...200312927706
time-temperature effects on salmonellae and staphylococci in foods. iii. thermal death time studies.thermal death time studies were conducted at 5 f intervals from 130 to 150 f with strains of salmonellae and enterotoxigenic staphylococci. heat-resistant salmonella senftenberg strain 775w, staphylococcus aureus strains 196e and ms149, and non-heat-resistant salmonella manhattan were studied in custard, chicken à la king, and ham salad. the f(140) values (minutes of exposure at 140 f required to effect 100% destruction) were as follows: s. senftenberg 775w in custard 78, and chicken à la king 8 ...196113683564
inactivation of strains of salmonella senftenberg by gamma irradiation. 19725084418
effect of ph and chelating agents on the heat resistance and viability of salmonella typhimurium tm-1 and salmonella senftenberg 775w in egg white.supplementation of egg white at ph 8.9 with 5 mg of disodium ethylenediaminetetraacetic acid (edta) per ml resulted in a kill of salmonella typhimurium tm-1 of greater than 10(6) per ml after 28 days at 2 c. while at 28 c, supplementation with 7 mg of edta per ml resulted in approximately a 10(6) kill in less than 24 hr. kena supplementation at 40 mg/ml of egg white resulted in a kill of s. typhimurium tm-1 of greater than 10(6) after approximately 60 hr of storage at 28 c. this is in contrast t ...19694984763
evaluation of several modifications of an ecometric technique for assessment of media performance.recovery of listeria monocytogenes 101m, jonesia denitrificans, salmonellae, and pediococcus sp. nrrl b-2354 across nine media was evaluated with three modified versions of an ecometric method. two approaches involved the use of broth cultures (10(8) to 10(9) cfu/ml) of individual strains and either large (10-microl) or small (1-microl) presterilized plastic loops. the third approach involved precultured slants and the inoculation of media with presterilized plastic inoculating needles (10(4) cf ...200314503736
salmonella senftenberg pneumonia: report of a case. 195114869013
heat resistance of salmonella typhimurium and salmonella senftenberg 775w in milk chocolate. 19684881964
die-off of enteric bacterial pathogens during mesophilic anaerobic digestion.conventionally treated sewage sludge may contain high concentrations of potentially pathogenic microorganisms and additional treatment is required to minimise the risks to health if it is to be recycled to agricultural land. mesophilic anaerobic digestion (mad) is the most widely used process in the uk for stabilising sludge prior to agricultural recycling, but little is known about the fate of a number of enteric pathogens as the sludge passes through the treatment processes. the aim of this st ...200414975643
variation in the faecal shedding of salmonella and e. coli o157:h7 in lactating dairy cattle and examination of salmonella genotypes using pulsed-field gel electrophoresis.to examine the variability in faecal shedding of salmonella and escherichia coli o157:h7 in healthy lactating dairy cattle and to evaluate the genetic relatedness of salmonella isolates.200415059205
parameters affecting the association of vibrios with the intestinal surface in experimental cholera.intestinal antibody (coproantibody) significantly reduced the adsorption of heat-killed vibrio cholerae to the mucosa of in vivo isolated ileal loops of adult rabbits. this suggests a direct effect of coproantibody on adsorption, which appears to function in addition to the antibacterial mechanism described earlier. when antivibrio serum was administered passively into intestinal loops, it showed a predilection for the intestinal mucosa. in vivo adsorption of vibrios appeared to parallel their v ...19724654645
microbiology of the frankfurter process: salmonella and natural aerobic flora.salmonella senftenberg 775w added to frankfurter emulsion was killed during normal processing in the smoke house when internal product temperature was 71.1 c (160 f) or above. the thermal destruction point of s. senftenberg 775w in frankfurters (temperature at which no viable cells were detected) was a function of the length of time of the process rather than of the starting number of cells. heating of frankfurters to 73.9 c (165 f) substantially reduced the total non-salmonella count. for total ...19744596752
salmonella shed by horses with colic.salmonella was isolated from 13 of 100 colicky horses admitted to a referral hospital. seven horses were shedding the microorganism at or soon after hospital admission. a unique serotype was introduced into the hospital by a horse not shedding salmonella at admission. it was concluded that 8 horses were infected before admission. whether the remaining 5 horses were infected before or after admission could not be determined. salmonella senftenberg was the most commonly isolated serotype from coli ...19854030461
salmonella senftenberg epidemic in a neonatal nursery. 19873679458
osteomyelitis: a rare complications of salmonella senftenberg infection--a case report.a case of chronic osteomyelitis is rare complication of salmonella senftenberg infection and is reported.19892628324
destruction of salmonella senftenberg on the shells of intact eggs by thermoultrasonication.the combined effect of ultrasonic waves and heat treatment applied simultaneously was evaluated on the survival of strains of salmonella senftenberg on shells of intact eggs. this combined process has a higher killing effect than heat treatment alone. the decimal reduction times (d-values) were decreased by 65.2 to 11.1% in the temperature range studied (57.8 to 67 degrees c). in contrast to the effect on salmonella enterica serovar enteritidis in a previous study, thermoultrasonication had no i ...200515830681
isolation of salmonella senftenberg from different clinical sources. 19911918872
salmonella senftenberg: a new pathogen in the burns ward.this is the first report of salmonella senftenberg serovar outbreak in a burns unit. this unit admits about 2000 patients with major burn injuries annually. routine sampling from wound swabs in december 1995 revealed s. senftenberg in a few samples following which a study was instituted from january to march 1996. of 446 burn admissions during this period 80 patients were culture positive for s. senftenberg in wound swabs. the protocol for investigation included wound swabs on admission and then ...199910630853
inactivation of salmonella enteritidis, salmonella typhimurium, and salmonella senftenberg by ultrasonic waves under pressure.the resistance of salmonella enteritidis (atcc 13076), salmonella typhimurium (atcc 13311), and salmonella senftenberg 775w (atcc 43845) to ultrasonic waves under pressure treatments, at sublethal (manosonication) and lethal temperatures (manothermosonication) in citrate-phosphate buffer and in liquid whole egg was investigated. the influence of treatment parameters on the inactivation rate of manosonication was also studied. decimal reduction times (dt) of salmonella enteritidis, salmonella typ ...200010772209
pulsed electric fields cause bacterial envelopes permeabilization depending on the treatment intensity, the treatment medium ph and the microorganism investigated.the relationship between membrane permeabilization and loss of viability by pulsed electric fields (pef) depending on the treatment intensity and the treatment media ph in two gram-positive (lactobacillus plantarum, listeria monocytogenes) and two gram-negative (escherichia coli, salmonella senftenberg 775w) bacterial species has been investigated. loss of membrane integrity was measured as increased uptake of the fluorescent dye propidium iodide (pi). non-permanent/reversible permeabilization w ...200716987561
inactivation of salmonella serovars in liquid whole egg by heat following irradiation treatments.salmonella is a frequent contaminant on eggs and is responsible for foodborne illnesses in humans. ionizing radiation and thermal processing can be used to inactivate salmonella in liquid whole egg, but when restricted to doses that do not affect egg quality, these technologies are only partially effective in reducing salmonella populations. in this study, the effect of ionizing radiation in combination with thermal treatment on the survival of salmonella serovars was investigated. of the six sa ...200616995507
development of thermal surrogate microorganisms in ground beef for in-plant critical control point validation studies.in search of a suitable surrogate microorganism for in-plant critical control point validation, we compared the rates of thermal inactivation of three bacteria, enterococcus faecium b2354, pediococcus parvulus hp, and pediococcus acidilactici lp, to those of listeria monocytogenes and salmonella. ground beef samples containing 4 and 12% fat were inoculated with e. faecium, l. monocytogenes, and salmonella senftenberg 775w and heated at 58, 62, 65, or 68 degrees c. the decimal reduction times (d- ...200717477266
outbreak of healthcare-associated infection and colonization with multidrug-resistant salmonella enterica serovar senftenberg in florida.in july 1999, a rare strain of multidrug-resistant salmonella enterica serovar senftenberg was isolated from the sputum of a trauma patient. over a 6-year period (1999-2005) in northeast florida, this salmonella serovar spread to 66 other patients in 16 different healthcare facilities as a result of frequent transfers of patients among institutions. to our knowledge, this is the first outbreak of healthcare-associated infection and colonization with a fluoroquinolone-resistant strain of s. senft ...200717564982
inactivation of salmonella senftenberg strain w 775 during composting of biowastes and garden wastes.determination of the minimum requirements (time-temperature relationship and moisture content) that are needed for a sufficient eradication of an indicator organism.200717584452
incidence of salmonella in fish and seafood.field laboratories of the u.s. food and drug administration collected and tested 11,312 import and 768 domestic seafood samples over a 9-year period (1990 to 1998) for the presence of salmonella. the overall incidence of salmonella was 7.2% for import and 1.3% for domestic seafood. nearly 10% of import and 2.8% of domestic raw seafood were positive for salmonella. the overall incidence of salmonella in ready-to-eat seafood and shellfish eaten raw was 0.47% for domestic--one shucked oyster and on ...200010826714
predicting microbial heat inactivation under nonisothermal treatments.the aim of this study was to develop an equation that accurately predicts microbial heat inactivation under nonisothermal treatments at constantly rising heating rates (from 0.5 to 5 degrees c/min) in media with different ph values (4.0 or 7.4). the survival curves of all bacteria (enterococcus faecium, escherichia coli, listeria monocytogenes, salmonella senftenberg 775w, salmonella typhimurium, and staphylococcus aureus) tested under isothermal treatments were nearly linear. for the most heat- ...200717612077
international outbreak of salmonella senftenberg in 2007. 200717868576
pleural involvement by salmonella senftenberg: a report of two cases.non-typhoidal serovars of salmonella are an unusual cause of pleuropulmonary infections. we report two patients with empyema caused by salmonella senftenberg. one patient had associated diabetes and gall bladder carcinoma, and infection was acquired in hospital. both patients responded well to parenteral antibiotics.200010851820
a rapid monitoring assay for the detection of salmonella spp. and salmonella senftenberg strain w775 in composts.the composting process needs to be validated for its hygienic status in order to ensure that it is free of pathogens. generally, this is evaluated through temperature monitoring, or additionally through active inoculation and monitoring of indicator organisms. we aimed to develop a monitoring method for the heat-resistant indicator organism salmonella enterica ssp. enterica serovar senftenberg strain w775 for detection in composting biowastes.200718045394
nosocomial infection by salmonella senftenberg in post cardiac surgery patients. 199910937303
salmonella enterica serovar senftenberg human clinical isolates lacking spi-1.nontyphoidal salmonella species cause gastrointestinal disease worldwide. the prevailing theory of salmonella enteropathogenesis is that bacterial invasion of the intestinal epithelium is essential for virulence and that this requires the virulence-associated genomic region salmonella pathogenicity island 1 (spi-1). recent studies of salmonella enterica infection models have demonstrated that enterocolitis and diarrhea in mice and cows can occur independently of spi-1. in this study, we sought t ...200818272702
molecular epidemiological analysis and microbial source tracking of salmonella enterica serovars in a preharvest turkey production environment.epidemiological studies were conducted to source track and delineate horizontal transmission pathways of salmonella serovars in a turkey production environment. salmonella enterica serovar heidelberg (n = 111), salmonella senftenberg (n = 14), salmonella muenster (n = 10), unidentifiable "roughs" (n = 5), salmonella anatum (n = 3), and salmonella worthington (n = 2) were isolated from the birds' cecal and crop contents, litter, environmental swabs, drinkers, and feed samples. these strains (n = ...200818361686
survival and growth of salmonella and listeria in the chicken breast patties subjected to time and temperature abuse under varying conditions.chicken breast patties were inoculated with a mixture of salmonella senftenberg, salmonella typhimurium, salmonella heidelberg, salmonella mission, salmonella montevideo, salmonella california, and listeria innocua. the initial inoculation of bacteria was approximately 10(7) log10 cfu/g. the inoculated patties were processed in a pilot-scale air convection oven at an air temperature of 177 degrees c, an air velocity of 9.9 m3/min, and a low (a wet bulb temperature of 48 degrees c) or high (a wet ...200111198436
salmonella senftenberg: ear infection. a case report.a case of otitis media, a rare complication of salmonella senftenberg infection is reported.200011271728
thermal inactivation of salmonella senftenberg and listeria innocua in ground chicken breast patties processed in an air convection oven.ground chicken breast patties were thermally processed in a lab-scale air convection oven at air temperatures of 163, 177, 190, 204, or 218 c to final patty center temperatures of 50, 55, 60, 65, 70, 75, or 80 c. the cooking time increased with increasing product temperature and decreased with increasing oven air temperature. prior to thermal processing, approximately 7 log10(cfu/g) of salmonella senftenberg and listeria innocua were inoculated into the chicken patties. survival of s. senftenber ...200111297292
observations on the distribution and control of salmonella species in two integrated broiler companies.the effectiveness of cleaning and disinfecting broiler farms and the persistence of salmonella species in two integrated broiler companies was investigated for two years. both companies used a cleaning and disinfection regime which included the application of a spray of phenolic disinfectant followed by fogging with formaldehyde solution, and this was highly effective in preventing carry-over of infection in the broiler houses. the disinfection of service areas and areas outside the houses was l ...200111554566
packed with salmonella--investigation of an international outbreak of salmonella senftenberg infection linked to contamination of prepacked basil in 2007.salmonella senftenberg is uncommon in the united kingdom. in january-june 2007, the health protection agency reported on 55 primary human cases of salmonella senftenberg in england and wales. in may 2007, fresh basil sold in the united kingdom was found to be contaminated with salmonella senftenberg. we launched an investigation to elucidate the cause of this outbreak. isolates were examined using plasmid profiling and pulsed-field gel electrophoresis, and the outbreak strain (ssftxb.0014) was i ...200818851676
colonization of broiler chicks by salmonella typhimurium definitive phage type 104.the prevalence of an antibiotic-resistant strain of salmonella typhimurium definitive phage type 104 (dt104) has increased dramatically in recent years resulting in increased morbidity and mortality in both animals and humans. colonization and shedding of salmonella typhimurium dt104 was studied in broiler chickens in two trials. in trial 1, 180 day-of-hatch chicks (n = 60 per group, n = 30 per replicate) were challenged with 10(6) cfu dt104 (wild-type isolate from poultry) or were commingled wi ...200111726146
thermal inactivation d- and z-values of salmonella serotypes and listeria innocua in chicken patties, chicken tenders, franks, beef patties, and blended beef and turkey patties.commercially formulated meat products, including chicken patties, chicken tenders, franks, beef patties, and blended beef and turkey patties, were obtained from processors. each product was inoculated with 7 to 8 logs of salmonella (senftenberg, typhimurium, heidelberg, mission, montevideo, and california) or listeria innocua. the inoculated meat samples were heat treated at 55 to 70 degrees c. at each temperature, the decimal reduction time (d) was obtained by linear regression of survival curv ...200211808807
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