RESUMEN
Rodents (n = 358) were trapped from 6 locations in Arizona, including 2 dairies, 2 swine raising operations, and 2 areas where domestic animal access was limited. Isolates of Leptospira interrogans serovar ballum were obtained from 3 house mice (Mus musculus) trapped in dairies. Leptospira were seen in silver-stained kidney sections of 10.4% of the rodents. The usefulness of serologic data in detecting leptospiral infection in these rodents was uncertain because so few animals yielded isolates that valid comparisons of culture positives to serologic positives were not possible. Titers greater than or equal to 1:160 were obtained to serovars autumnalis, ballum, bratislava, canicola, grippotyphosa, hardjo, icterohaemorrhagiae, and pomona. Nearly 60% of the rodents had microscopic lesions in kidneys, including 20 of 34 (59%) of those in which leptospira were seen.
Asunto(s)
Clima , Leptospirosis/veterinaria , Enfermedades de los Roedores/epidemiología , Animales , Animales Domésticos , Antígenos Bacterianos/análisis , Arizona , Vivienda para Animales , Riñón/microbiología , Leptospira/inmunología , Leptospira/aislamiento & purificación , Leptospirosis/epidemiología , Leptospirosis/microbiología , Enfermedades de los Roedores/microbiología , Roedores , Especificidad de la EspecieRESUMEN
Sera from 1,215 beef cattle in Arizona were evaluated by leptospiral microscopic agglutination test in 1981. Over 25% had agglutinins to greater than or equal to 1 of 5 serovars of Leptospira interrogans used as antigens (canicola, grippotyphosa, hardjo, icterohaemorrhagiae, and pomona) at a titer of greater than or equal to 1:100, and 8.2% had titers of greater than or equal to 1:400 to greater than or equal to 1 serovars. The most common serovar to which reactions were detected was hardjo; agglutinins were detected at titers of greater than or equal to 1:100 in 14.3% and of greater than or equal to 1:400 in 5.5%. Cross reactions were rare at serum dilutions greater than or equal to 1:100 (2%) and extremely rare at greater than or equal to 1:400 (0.7%). Because vaccination with leptospiral bacterins is seldom practiced in Arizona beef cattle, a titer of greater than or equal to 1:100 may be useful in estimating incidence and prevalence of the disease and as an aid to diagnosis of leptospirosis.
Asunto(s)
Enfermedades de los Bovinos/epidemiología , Leptospirosis/veterinaria , Animales , Arizona , Bovinos , Enfermedades de los Bovinos/inmunología , Leptospirosis/epidemiología , Leptospirosis/inmunologíaRESUMEN
Nasal, pharyngeal, cervical and vaginal swab specimens were obtained from 74 desert bighorn sheep for the purpose of investigating the normal aerobic bacterial flora of wild sheep. A total of 281 isolates was obtained and identified by standard microbiologic tests. One hundred seven of these isolates were gram positive and included Bacillus sp. (36%), Staphylococcus epidermidis (8%), S. aureus (4%), Corynebacterium sp. (diphtheroids, 4%), and Streptococcus sp. (48%). gram negative isolates totaled 174 and included Neisseria sp. (18%), Citrobacter sp. (3%), Enterobacter sp. (2%), Escherichia coli (2%), Proteus sp. (2%) and non-fermentative bacilli (NFB) (73%). Of the NFB isolates, Pseudomonas sp. (25%), Acinetobacter sp. (18%), Moraxella sp. (15%) were identified.