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residue organic mixtures from drinking water show in vitro mutagenic and transforming activity.indications of possible health effects of residue organics in drinking water have been sought using short-term tests of mutagenic and transforming activity. ten percent or less of the total organic material in drinking water has been identified; the remainder is believed to include thousands of unknown nonvolatile compounds. residual organics were concentrated from drinking water from representative u.s. cities by reverse osmosis followed by liquid-liquid extraction [yielding the reverse osmosis ...1978569710
prevalence of cryptosporidium sp in equids in louisiana.in 1985, 22 pony foals reared in a helminth-free environment were tested daily for oocysts of cryptosporidium sp by use of fecal flotation. oocysts were found in all foals. oocysts were first observed in feces collected from foals 9 to 28 days after birth. the mean period of oocyst shedding was 10 days and ranged from 2 to 18 days in individual foals. diarrhea was observed in 14 of 22 (64%) foals and began before the period of oocyst shedding. fecal samples also were examined for other infective ...19892712425
clinical evaluation and prerelease management of american river otters in the second year of a reintroduction study.in the first year (1984) of a reintroduction study, 10 american river otters (lutra canadensis) from louisiana were transported to oklahoma, held for 5 days for clinical evaluation, surgical implantation with intra-abdominal radiotelemetry devices, and then released in oklahoma. four of 10 otters released died within 32 days. clinical evaluation indicated that respiratory tract disease, bacterial and parasitic infections, and inanition may have contributed to the death of these otters. in the se ...19854077627
sources of salmonellas in market swine. 19685250133
incubation period and other features of food-borne and water-borne outbreaks of typhoid fever in relation to pathogenesis and genetics of resistance.examination of the incubation period of typhoid fever, the attack rate, and the spread of the case-onset pattern in food-borne and water-borne outbreaks and in experimental infections indicates that typhoid fever arises when organisms invade the circulation by at least two mechanisms--as a result of either the net growth of invading organisms at an early stage or a breakdown in host cellular mechanisms later. the distribution of case-onset patterns suggests that a small number of genes, possibly ...19836132187
survey for selected diseases in nutria (myocastor coypus) from louisiana.thirty-two trapper-caught nutria (myocastor coypus) from east baton rouge, iberville, tangipahoa, and st. helena parishes in louisiana (usa) were sampled for several disease agents. antibodies against toxoplasma gondii, chlamydia psittaci, francisella tularensis, leptospira spp., and encephalomyocarditis virus were detected in 7%, 14%, 0%, 7%, and 0% of nutria, respectively. both animals seropositive for leptospirae were positive for l. interrogans serovar canicola. no salmonella spp. were isola ...19947933295
plasmid-mediated high-level gentamicin resistance among enteric bacteria isolated from pet turtles in louisiana.the sale of small turtles is banned by the food and drug administration from the u.s. market due to concerns about their excretion of salmonella spp. to produce a safe pet for the export market, the louisiana pet turtle industry uses gentamicin sulfate baths (1,000 microg/ml) to eradicate salmonella spp. from turtle eggs. in 1999, we analyzed bacterial samples recovered from turtle farms and found that strains of salmonella enterica subsp. arizonae and other bacteria, such as enterobacter cloaca ...200616391058
prevalence of selected bacterial infections associated with the use of animal waste in louisiana.human health is a major concern when considering the disposal of large quantities of animal waste. health concerns could arise from exposure to pathogens and excess nitrogen associated with this form of pollution. the objective was to collect and analyze health data related to selected bacterial infections associated with the use of animal waste in louisiana. an analysis of adverse health effects has been conducted based on the incidence/prevalence rates of campylobacteriosis, e. coli o157:h7 in ...200516705805
assessment of post-hurricane katrina recovery in poultry slaughter establishments.control of bacterial contamination during poultry slaughter can be compromised by natural disaster. in october 2005, disaster recovery was evaluated in 11 broiler slaughter establishments 1 month after operations were disrupted by hurricane katrina. a questionnaire was administered to characterize the establishment's operational disruption. carcass rinses were collected at the early and late stage of the slaughter process (rehang and postchill). counts for generic escherichia coli were determine ...200717612083
relationship between home food-handling practices and sporadic salmonellosis in adults in louisiana, united states.salmonellosis is the leading cause of death caused by foodborne bacterial pathogens in the united states. approximately 90% of salmonella infections are sporadic, but most of what is known about salmonellosis has come from outbreak investigations. we studied the risk for sporadic salmonellosis among 115 persons aged > or = 15 years reported to the louisiana office of public health during may 1998-april 1999, compared with 115 age-matched controls. significantly more case-patients than controls h ...200212403102
turtle-associated salmonellosis. 3. the effects of environmental salmonellae in commercial turtle breeding ponds. 19725063894
salmonella in turtles imported to israel from louisiana. 19863735623
pet turtles: a continuing international threat to public health.the occurrence of salmonella spp. in red-eared (pseudemys scripta elegans) turtle eggs imported into canada from louisiana in june to september 1988 was examined. of 28 lots tested, six (21%) lots from three of four exporters harbored salmonellae. salmonella poona and salmonella arizonae were frequently encountered in both fertile eggs and packaging moss. turtles hatched in our laboratory from affected lots of eggs shed salmonella in tank water for up to 11 months. widespread use of gentamicin o ...19902372004
salmonella colonization in commercial pet turtles (pseudemys scripta elegans).an epidemiological survey was conducted on two commercial turtle farms in southern louisiana to determine the reason for an apparent increase in the prevalence of salmonella spp. in turtle hatchlings at the time of pre-export certification examination. pond water was consistently found to be contaminated (6/36 samples) with either salmonella newport, s. arizonae, or s. poona. environmental specimens obtained from eggs and turtle hatcheries (204 specimens) failed to yield salmonella spp. a sample ...19902209735
prevalence and antimicrobial resistance of salmonella serovars in conventional and organic chickens from louisiana retail stores.in this 1-year survey from october 2006 to september 2007, we isolated and characterized 126 salmonella isolates from conventionally raised (n=141) and organically raised (n=53) chicken carcasses obtained from 27 retail stores in baton rouge, louisiana. salmonella was isolated from 22% of conventional and from 20.8% of organic chicken samples. eight salmonella serovars were identified; predominant ones included kentucky, hadar, and enteritidis. the vast majority of isolates within the same chick ...200919610326
turtles.juvenile turtles have the capacity to eat more than 500 3rd and 4th instar mosquitos per day. keeping one turtle in each water-storage tank during field trials for a dengue-control project in honduras eliminated all mosquito production from the tanks. in louisiana, keeping turtles in residential roadside ditches polluted by septic-tank effluent reduced culex quinquefasciatus larvae and pupae by more than 99%. turtles can serve as alternate hosts for salmonella when kept in small pet containers, ...200717853607
an update on salmonella in louisiana. 200717539494
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