TitleAbstractYear(sorted ascending)
combining real-time polymerase chain reaction using sybr green i detection and sequencing to identify vertebrate bloodmeals in fleas.programs that aim to control vector-borne zoonotic diseases require information on zoonotic hosts and on the feeding behavior of bridging vectors that are capable of transmitting pathogens from those hosts to humans. here we describe an assay developed to identify bloodmeals in field-collected cat fleas (ctenocephalides felis bouché) to assess this species' potential role as a yersinia pestis bridging vector in a plague-endemic region of uganda. our assay uses a single primer set and sybr green ...023270174
serum reaction of "bacillus pestis" in plague: a preliminary communication. 190220760591
further observations on the reaction of bacillus pestis in plague. 190320760881
on the relationship between bacillus pestis and bacillus pseudotuberculosis rodentium (pfeiffer). 190820474364
lxxx. observations on the length of time that fleas (ceratophyllus fasciatus) carrying bacillus pestis in their alimentary canals are able to survive in the absence of a host and retain the power to re-infect with plague. 191520474603
lxxxii. notes on the development of bacillus pestis in bugs (cimex lectularius) and their power to convey infection. 191520474605
immunological distinctions of two strains of the mouse typhoid group isolated during two spontaneous outbreaks among the same stock.two strains of the paratyphoid b-enteritidis group causing separate epidemics of mouse typhoid among 2,500 to 4,000 cancer breeding mice are found to be antigenically different. mouse typhoid i, isolated from the first outbreak, is related but not identical with two strains of enteritidis, while mouse typhoid ii is related to but not identical with the human paratyphoid b strains. in a separate paper in this series, webster has identified mouse typhoid ii strain with bacillus pestis caviae smith ...192219868651
experimental epidemiology : ii. effect of the addition of healthy mice to a population suffering from mouse typhoid.1. a kind of mouse village was set up into which was introduced a small number of mice fed on a culture of so called mouse typhoid (bacillus pestis cavice of the bacillus paratyphosus b group) bacillus. the spread of the infection so induced to the cages, or "homes," of the other mice was left to accident through the attendant who fed the animals and cleaned the cages. that this means was likely to be sufficient was deduced from the epidemic reported by lynch. a spot map was kept throughout the ...192219868657
experiments on normal and immune mice with a bacillus of mouse typhoid.if live cultures of a mouse strain of bacillus pestis caviae are injected intrapleurally or intraperitoneally into normal mice, there occurs an initial lag in the rate of bacterial multiplication lasting a few hours, followed by a rapid and continued acceleration of growth until the death of the animal. if live cultures of this organism are given per os to normal mice, there occurs an incubation period of 5 to 6 days, after which the animal usually develops symptoms of disease and succumbs. a sm ...192219868658
the intestinal flora in mouse typhoid infection.the normal flora of laboratory mice at the rockefeller institute, fed on a bread and milk diet, was determined. bacillus acidophilus and bacillus bifidus outnumber the bacillus coli, bacillus acidi lactici, and bacillus coli communior group about twenty-five to one. white and yellow cocci which may or may not liquefy gelatin are occasionally noted; spirochetal and vibrio forms and yeasts are usually seen in stained preparations. this flora does not change when mice are artificially infected per ...192319868710
microbic virulence and host susceptibility in mouse typhoid infection.mice bred at the rockefeller institute vary in their susceptibility to mouse typhoid infection caused by a certain strain of bacillus pestis caviae. this graded variation may be roughly analyzed as follows: in any series infected per os with a fixed dose, 20 to 30 per cent show no sign of infection, no positive blood cultures, and no agglutinins; 5 or 10 per cent present symptoms of disease, positive blood cultures, and then recover with or without homologous agglutinins; 70 or 80 per cent devel ...192319868724
the virulence of an epidemic strain of bacillus pestis caviae.ever since pasteur's demonstration of the modifying effect of animal passage on the virulence of bacteria, this device has been regarded as of great importance in intensifying infective capacity. it is not often, however, that extensive parallel tests have been made of the power of a microorganism to produce infection in a species of animal which is its natural habitat and under conditions in which the normal as well as artificial portal of entry is employed, and the potency of the microorganism ...192319868759
microbic virulence and host susceptibility in paratyphoid-enteritidis infection of white mice : vi. the relative susceptibility of different strains of mice to per os infection with the type ii bacillus of mouse typhoid (bacillus pestis caviae).five separate strains of mice have been tested for their relative susceptibility to per os infection with the type ii bacillus of mouse typhoid (bacillus pestis caviae), more than 500 individuals of each strain having been employed in the course of 12 months. clear-cut differences in the susceptibility of these strains to the infection have been shown to exist.192519868981
microbic virulence and host susceptibility in paratyphoid-enteritidis infection of white mice : vii. seasonal variation in the susceptibility of different strains of mice to per os infection with the type ii bacillus of mouse typhoid (bacillus pestis caviae).seasonal variations are described in the response of five strains of mice to inoculation with the type ii bacillus of mouse typhoid (bacillus pestis caviae). there occurred in the case of all strains a high peak of mortality during the spring, a lower death rate during the summer, and a subsequent autumn rise in the number of deaths.192519868982
studies on the bacteriophage of d'herelle : iv. concerning the oneness of the bacteriophage.lytic filtrates, active against bacillus dysenterioe shiga, bacillus coli, bacillus pestis cavioe, and staphylococcus respectively, proved to be differently affected by changes in hydrogen ion concentration. anti-staphylococcus lysin was the least resistant of the four, showing deterioration in 3 hours at 7 degrees c. beyond the zone of hydrogen ion concentration limited by c(h) = 6.3 x 10(-5) and c(h) = 1.6 x 10(-9). under the same conditions, the zone of resistance of anti-coli filtrate lay be ...192519869092
microbic virulence and host susceptibility in paratyphoid-enteritidis infection of white mice : ix. the relationship of dosage to mortality rate, survival time, and cage population.epidemics of mouse typhoid set up among the rockefeller institute strain of mice were studied over a period of 6 months. during this time the relationship of cage number of mouse typhoid bacilli to mortality, total population, and survival time was determined. a single virulence titration of the epidemic strain was made, and at the end of the experiment all survivors were examined for evidence of infection. the following conclusions may be drawn for the data here presented. 1. the available dosa ...192619869111
microbic virulence and host susceptibility in paratyphoid-enteritidis infection of white mice : x. the relative susceptibility of different strains of mice to per os infection with the type ii bacillus of mouse typhoid (bacillus pestis cavlae). further studies.four separate strains of mice have been tested for their relative susceptibility to per os infection with the type ii bacillus of mouse typhoid (bacillus pestis caviae), 300 to 600 individuals of each strain having been employed in the course of 12 months. in confirmation of a previous paper, clear-cut differences in the susceptibility of these strains have been shown to exist. in general, the colored strains were distinctly less resistant than the albino strains.192619869112
microbic virulence and host susceptibility in paratyphoid-enteritidis infection of white mice : xi. seasonal variation in the susceptibility of different strains of mice to per os infection with the type ii bacillus of mouse typhoid (bacillus pestis caviae). further studies.four unrelated strains of mice were tested over a period of 1 year for their seasonal variation in susceptibility to per os feeding with a culture of bacillus pestis caviae of known virulence. certain consistent fluctuations, determined to be in general agreement with those already recorded in a previous paper, were found and described.192619869113
studies on the bacteriophage of d'herelle : vi. on the virulence of the overgrowth in the lysed cultures of bacillus pestis caviae (m. t. ii).resistants isolated from the overgrowth of cultures of b. pestis caviae (m. t. ii) lysed by various strains of specific bacteriophage proved to be avirulent when administered to mice by feeding, or by intraperitoneal injection. these cultures remained resistant to the action of bacteriophage so long as they were carried on agar. when transferred to broth, however, one group of resistants, namely, those isolated by means of "weak" phages, became susceptible to lysis after five to seven daily pass ...192619869210
the selection of a strain of bacillus pestis for the preparation of vaccine, with special reference to the effect of animal passage on virulence. 192720474920
the enzymic hydrolysis of phloridzin.1. considering previously published data on the velocity of hydrolysis of glucosides by acids, it is shown that phloridzin, judged from the standpoint of the velocity coefficient and the critical increment for hydrolysis, resembles the gamma-fructosides (sucrose, raffinose and melezitose) more closely than it does the normal glucosides (salicin, arbutin, maltose, etc.). 2. previous work on the enzymic hydrolysis of phloridzin shows that it is not hydrolysed by emulsin, but that it is hydrolysed ...193019872565
observations on the infection of chick embryos with bacterium tularense, brucella, and pasteurella pestis.1. comparison of the infections of chick embryos by the chorio-allantoic route indicates that bacterium tularense and brucella suis, abortus, and melitensis exhibit varying degrees of facultative intracellular parasitism. pasteurella pestis is adapted to rapid proliferation and spread in the intercellular fluids. 2. in the early stages of infection bacterium tularense has a marked affinity for growth within ectodermal epithelial cells. brucella suis and brucella abortus differ in their selectivi ...194119871129
experimental infection of the chick embryo with virulent and avirulent pasteurella pestis. 194419970765
an experimental study on cellular immunity in pasteurella pestis infection. 194620475743
an experimental study on cellular immunity in pasteurella pestis infection. 194620983007
the action of pasteurella pestis bacteriophage on strains of pasteutrella, salmonella, and shigella. 194720251259
the action of pasteurella pestis bacteriophage on pasteurella, salmonella, and shigella. 194720255166
antigenic structure of pasteurella pestis and the isolation of a crystalline antigen. 194720287358
the action of pasteurella pestis bacteriophage on strains of pasteurella, salmonella, and shigella. 194716561327
alteration of pasteurella pestis bacteriophage following successive transfer on pasteurella pseudotuberculosis and on shigellae. 194818102208
twenty-five year survival of a pasteurella pestis culture without transfer. 194918124445
the behavior of pasteurella pestis in glycerin and rhamnose mediums. 194918132375
relationship of catalase activity to virulence in pasteurella pestis. 194918145415
[the toxin of pasteurella pseudotuberculosis; analogies with the toxin of past. pestis (with reference to a memorandum of a. s. lazarus and m. m. nozawa)]. 195014771604
studies on the semi-synthetic media for the pasteurella pestis. 1st report: on the nutritional requirement of past. pestis. 195014774031
meningitis due to pasteurella other than pasteurella tularensis and pasteurella pestis. 195014783139
detection of rough dissociants of pasteurella pestis with tetrazolium chloride. 195014784480
protective action of antibiotics against the toxin of pasteurella pestis in mice. 195014808322
the influence of insulin on the rate of glucose oxidation by pasteurella pestis.the rate of oxidation of glucose by freshly harvested resting cells of p. pestis strain a-1122 was accelerated by 20 to 41 per cent in the presence of insulin. the stimulatory action was not noted when cell-free enzyme preparations were employed and was less marked after storage of cells for 3 days. although insulin was not oxidized by the organism, the amount of oxygen consumed during the dissimilation of a unit weight of glucose was increased in the presence of the hormone.195014824488
[pasteurella pestis; prophylaxis and treatment of plague]. 195015417885
the production of "giant" cells of pasteurella pestis by treatment with camphor. 195015436467
double infection of the rat fleas x. cheopis and n. fasciatus with pasteurella and salmonella. 195114875880
precipitin reactions with soluble antigens from suspensions of pasteurella pestis or from tissues of animals dead of plague. 195114888892
isolation of an active polysaccharide fraction from plague organisms. 195114891835
[the effect of streptomycin therapy on the pathogenic action of pasteurella pestis in experimentally induced pneumonic plague in guinea pigs]. 195114830980
a solid medium for detecting colonial variants of pasteurella pestis. 195114832192
[reproduction of the pasteurella pestis]. 195114844815
rapid differentiation between pasteurella pestis and pasteurella pseudotuberculosis by action of bacteriophage. 195114850752
[varieties of pasteurella pestis; new hypothesis]. 195114859080
studies on the specific soluble protein of pasteurella pestis and allied organisms. i. isolation, fractionation and certain physical, chemical and serological properties. 195114861421
[quantitative technique of rapid agglutination of pasteurella pestis]. 195114865376
the envelope substance of pasteurella pestis. 195114869620
plague bacillus. 195214901122
[history of simultaneous independent discovery of pasteurella pestis (bacillus pestis) yersin]. 195214913119
kwashiorkor in africa. 195214925815
studies of the antigenic composition of influenza b viruses. 195214925819
the effect of temperature on the nutritional requirements of pasteurella pestis. 195214927852
studies on immunization against plague. i. the isolation and characterization of the soluble antigen of pasteurella pestis. 195214927919
studies on the nutrition and physiology of pasteurella pestis. i. a chemically defined culture medium for pasteurella pestis. 195214938341
studies on immunization against plague. iii. quantitative serological studies on an immunizing antigen of pasteurella pestis. 195214938550
the lag phase in the growth curve of pasteurella pestis. 195214954412
the irreversibility of methionine synthesis from cysteine in pasteurella pestis. 195214955501
[pasteurella pestis mutants selected or induced by bacteriophage; eventual reversibility; theoretical and epidemiological importance]. 195212979296
[biochemical characteristics of the strains of wild plague in kurdistan]. 195212986371
[the behavior of aerobic bacteria in the fertilized chicken egg. ii. the behavior of staphylococci, meningococci, streptococci, pneumococci, bacterium tularense, pasteurella pestis and brucella abortus bang in fertilized chicken egg]. 195213015998
studies on immunization against plague. iv. the method of the hemagglutination test and some observations on the antigen. 195213022971
[production of crystals by a strain of pasteurella pestis cultured on certain gelose media]. 195213033257
studies on immunization against plague. v. multiplication and persistence of virulent and avirulent pasteurella pestis in mice and guinea pigs. 195313035114
rapid identification of pasteurella pestis using specific bacteriophage lyophilized on strips of filter paper; a preliminary report. 195313057838
genetic studies on the development of streptomycin resistance in pasteurella pestis. 195313069409
plague studies. ix. epidemiology.epidemiological aspects of (a) bubonic plague and (b) primary pneumonic plague are discussed separately in this study. the cause, spread, and persistence of bubonic outbreaks are dealt the case of primary pneumonic plague, the author systematically reviews the factors influencing the spread of the disease: climatic and social conditions, infectivity of the patients, immunity, and control measures. in discussing the cause of pneumonic plague outbreaks, the author deals with the possible i ...195313082391
on cultivation of bac. pestis in the tube of glucose agar containing the infusion of animal organ. 195313084299
studies on the specific soluble proteins of pasteurella pestis and p. pseudotuberculosis. ii. complement-fixing and immunogenic properties. 195313096754
[geographical distribution of three species of pasteurella pestis]. 195313101739
recent studies on the immunity response to administration of different plague vaccines.evaluation of the immunity produced by plague vaccines was made by measurement of the reactions in the body fluids of man and different animals to demonstrate altered refractoriness. four serological methods were used: the agglutination test, the complement-fixation test, the passive mouse-protection test, and the haemagglutination test. results showed that the majority of animal and human hosts, in response to injections of pasteurella pestis, vigorously develop antibodies which may persist in ...195313115983
treatment of bubonic plague with sulfonamides and assess the curative value of different drugs in bubonic plague infection, white mice were infected in the laboratory with living pasteurella pestis, and the treatment with the drug to be tested was begun either 48 or 72 hours after infection, it taking 48-72 hours for the development in mice of septicaemia-the decisive factor in plague infection. sulfathiazole, sulfapyridine, sulfamerazine, sulfamethazine, sulfadiazine, antiplague serum, penicillin, streptomycin, aureomycin, chloramphenicol, ...195313115984
[methods of differentiating pasteurella pestis from pasteurella pseudotuberculosis]. 195313115985
[classification of plague by biochemical methods; current knowledge and trends in research]. 195313115986
plague in africa from 1935 to 1949; a survey of wild rodents in african territories.the history of plague in africa during the period 1935-49 is reviewed. much of the information derives from a questionnaire sent to all african territories in 1950. the annual incidence of plague in africa declined, particularly from 1946 onwards. in 1949, under 400 cases were reported, as compared with over 6,000 in 1935. by the end of 1949, plague was still active in the belgian congo, kenya and tanganyika, madagascar, and southern africa. no cases were reported from egypt, tunisia, algeria, m ...195313115987
[wild rodents infected with pasteurella pestis in argentina]. 195313115988
[two complex media for differentiation of three varieties of pasteurella pestis and pasteurelle pseudotuberculosis]. 195313150068
the lag phase in the growth-curve of pasteurella pestis. 195313134603
tuberculostatic activity of leea hirta roxb. (kaka jangan). 195313142669
[latency phase in the growth of pasteurella pestis in bouillon]. 195313148768
alteration of hsp82 gene expression by the gypsy transposon and suppressor genes in drosophila melanogaster.several mutations in drosophila result from insertion of the gypsy retrotransposon. gypsy insertion mutagenesis and its modulation by allele-specific modifier genes were investigated by inserting gypsy or fragments of it into the intron of the drosophila hsp82 heat shock gene. with gypsy in the parallel orientation, nearly all transcripts in transfected cells and transformed pupae were truncated in the 5' long terminal repeat (ltr). truncation also occurred in or near the 3' ltr. the 5' ltr poly ...19532542128
the basis of virulence in pasteurella pestis: attempts to induce mutation from avirulence to virulence. 195413149733
the basis of virulence in pasteurella pestis: comparative behaviour of virulent and avirulent strains in vivo. 195413149734
the oxidative dissimilation of serine by pasteurella pestis. 195413143006
the cause of increased susceptibility of mice to avirulent pasteurella pestis after exposure to a sublethal dose of x irradiation. 195413143221
a hemagglutination test for plague antibody with purified capsular antigen of pasteurella pestis. 195413138581
antigenic substance of pasteurella pestis concerning hemagglutination. 195413251773
[finding of sylvatic plague in the republic of mexico; natural infection of cynomys mexicanus (prairie dogs) with pasteurella pestis]. 195414372433
detection of plague antigens in tissues of persons dead from plague. 195414378904
[the three types of bacillus pestis (pasteurella pestis); epidemiological importance of this idea]. 195414393103
metabolic reactions of pasteurella pestis. i. terminal oxidation. 195413152047
studies on immunization against plague. vi. growth of pasteurella pestis and the production of the envelope and other soluble antigens in a casein hydrolyzate mineral glucose medium. 195413152055
virulence in pasteurella pestis. 195413156609
[biological and biochemical behavior of pasteurella pestis and pasteurella pseudotuberculosis]. 195413160765
studies on immunization against plague. vii. a hemagglutination test with the protein fraction of pasteurella pestis: a serologic comparison of virulent and avirulent strains with observations on the structure of the bacterial cells and its relationship to infection and immunity. 195413163401
production of protective antigens by pasteurella pestis in a synthetic medium. 195413177604
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