A serological survey for leptospiral antibodies was carried out on 5 041 abattoir pigs from different regions in South Africa. Antibodies to at least one serovar were detected in 22,2% of the animals. The serovars showing the highest prevalence were: icterohaemorrhagiae (12,6%), hardjo (12,1%) and bratislava (7,5%). The serum dilution level at which 90% of the sera reacted was 1/80 or 1,160.

A serological survey was conducted to determine the prevalence of antibodies to Newcastle disease virus in apparently healthy and unvaccinated adult indigenous chickens. Haemagglutination inhibiting antibodies to Newcastle disease virus were found in the sera of 51 out of 89 (57.3%) chickens sampled.

A serological survey of the Seminole Indians in south Florida for evidence of exposure to arbovirus infection indicated not only past infection with the recognized North American encephalitis viruses-a high incidence for St. Louis encephalitis-but exposure to a Bunyamwera group agent and to Venezuelan equine encephalitis virus, activity of which had not been previously recognized north of Panama.

Canine leptospirosis is a zoonosis caused by bacteria belonging to the genus Leptospira. Dogs are one of animal species involved in cycle preservation and transmission urban areas. Serological testing for presence specific antibodies against Leptospira spp. dogs was continuously performed between 2010 2020 city Belgrade. At request owners themselves, other veterinary laboratories or laboratory ...