yersinae isolated from wapiti (cervus canadensis roosevelti).yersinia enterocolitica and yersinia enterocolitica-like bacteria were isolated from 22 of 90 fecal samples taken from five herds of wapiti studied in northwestern california. the serotypes included: (5), (6), (11), (16), (2,19), (4,16) and (6,15). in one herd, all of the organisms were isolated from within a one hectare area. a significantly higher (p < .02) prevalence of isolations was obtained during april and may.197616498883
epidemiologic investigations of yersinia enterocolitica and related species: sources, frequency, and serogroup distribution.during an 11-year period (1978 to 1989), over 300 strains of yersinia spp. (excluding y. pestis and y. pseudotuberculosis) were recovered from a variety of gastrointestinal and extraintestinal sites in patients in california. over the 11-year period, y. enterocolitica serogroup o:3 predominated, although a shift in the relative frequency of this serogroup was observed during this interval, increasing dramatically during the years 1984 to 1989. of the remaining y. enterocolitica isolates, over 40 ...19902351734
the role of yersinia enterocolitica in appendicitis in the southwestern united states.infection with yersinia enterocolitica had been associated with acute appendicitis in approximately six per cent of patients in northern european countries. however, the incidence of y. enterocolitica in patients with appendicitis in this country is uncertain. therefore, this study was undertaken to ascertain whether y. enterocolitica is a possible infectious agent in appendicitis in the southwestern united states. fifty prospective patients (35 men and 15 women) with an average age of 22.3 year ...19911746791
recovery of yersinia enterocolitica from streams and lakes of and lake water from the mammoth lakes region of california was sampled for yersinia enterocolitica. from 10 of the 34 sites examined, organisms were isolated that were biochemically identified as y. enterocolitica. only one of the ten strains could be serologically confirmed. this strain was identified as y. enterocolitica serotype 16. although an outbreak of enteritis in the area prompted this study, no correlation with gastrointestinal disease could be established since the majority of ...1976984815
yersinia enterocolitica isolates from humans in california, 1968-1975.this paper reports on the serological and biochemical characteristics of 24 human isolates of yersinia enterocolitica submitted to the california department of health from 1968 through 1975. nine different serotypes were represented. the majority of strains were serotype o:8 (six strains) and serotype o:5 (five strains). sources of the isolates included feces (12 cases), blood (3), sputum or throat (3), bile or bowel drainage (2), wounds (2), breast abscess (1), and skin abscess (1). clinical hi ...1976965477
yersiniae in the soil of an infected wapiti range.yersinia enterocolitica was isolated from 10 of 121 soil samples from an area inhabitated by infected wapiti (cervus elaphus roosevelti) in northwest california. significantly (p less than 0.05) more soil samples from a forest habitat were infected, compared to soil samples from prairie habitats. soil was found infected with yersiniae only on dates for which rainfall in excess of 17 mm had occurred during the previous 7 days.1979522222
yersiniosis in california.thirty-three strains of yersinia enterocolitica representing 11 different serotypes were identified from human isolates in california between 1968 and mid-1977. the most frequently encountered serotype, 0:5,27, was identified in 8 cases. twenty-one strains, representing five serotypes, were esculin- and salicin-negative, and were considered to be the primary cause of disease in the majority of these cases. the remaining strains, representing six serotypes, were esculin- and salicin-positive, and ...1979535374
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