RESUMEN
Os autores examinaram 500 amostras de soros de suinos aparentemente normais, abatidos em um matadouro proximo a cidade de Sao Paulo.A tecnica usada foi a soro-aglutinacao microscopica com leitura em campo escuro, tendo-se empregado como antigenos 12 sorotipos de leptospiras vivas. Encontraram-se 16,2% de soros positivos, com predominancia para os sorotipos pomona, wolffi e grippotyphosa. Os titulos variaram de 1/200 a 1/3.200, sendo que nesta ultimma diluicao houve apenas um soro positivo para o sorotipo pomona. A taxa de positividade e a possibilidade de os animais positivos estarem na condicao de reservatorio de leptospiras sao tambem abordadas
Asunto(s)
Aglutininas , Leptospirosis , Enfermedades de los PorcinosRESUMEN
A serological examination was carried out for L. monocytogenes antibodies on 9,318 domestic animal--7,809 bovine, 838 horses and 671 swine--in São Paulo, Brazil. Serum agglutination in tubes was the method used. Only somatic antigens from serotypes 1, 2, 3, 4a and 4b were employed. It was considered reagent all sera reacting in a titer 1/20 while as positive only sera with 1/320 or above. According this criteria the results showed showed that in cattle 17.8% were reagent but only 8 sera were positive for types 1, 2 and 4b. Only type 1 was found in horses in a rate of 22.7% reagent, and 11 positive samples. For swine the percentage of reagent was 13.3% but none serum was positive, since the highest titer was 1/160.