EN
Serological and bacteriological examinations for the presence of Salmonella sp. were carried out on 104 samples of fermented sludge sediments, both fresh and dewatered on plots. Serological examinations were performed with the use of the latex test. Bacteriological tests were done on growth media and differential ones. Biochemical examinations were carried out as well. Seropositive results were noticed in 64.1 per cent of fresh fermented sludge sediments, dewatered on plots. Salmonella sp. were isolated from 32.6 per cent of the samples of fresh fermented sediments and from 15.4 per cent of the samples of fermented, dewatered sediments. The compatibility between serological and bacteriological examinations was 90.3 per cent and was statistically significant.