Survey for antibodies against maedi-visna in sheep in Poland.
Eighteen flocks of sheep were serologically tested for antibody to maedi-visna virus. A total of 4284 serum samples were tested by agar gel diffusion test and 1015 (24%) were found positive. Prevalence of infection increased with the age of sheep. Within age groups, the lowest prevalence was in the group at 1 year or less (7%) and gradually increased to the highest prevalence at 5 years of older (52%). A difference in prevalence of infection among breeds and sexes was seen but not proven because of inadequate numbers. All flocks tested were infected with a range of serological prevalence from 1.2% to 45.9%.
Kita
J
J
Department of Epizootiology, Faculty of Veterinary Medicine Agricultural University, Warsaw, Poland.
Cutlip
R C
RC
Kempski
W
W
Sacks
J
J
D000367:Age Factors; D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis*; D005779:Immunodiffusion / Q000379:methods; D011021:Pneumonia, Progressive Interstitial, of Sheep / Q000175:diagnosis / Q000453:epidemiology / Q000276:immunology* / Q000382:microbiology; D011044:Poland / Q000453:epidemiology; D015995:Prevalence; D012756:Sheep / Q000276:immunology* / Q000382:microbiology; D014790:Visna-maedi virus / Q000276:immunology* / Q000302:isolation & purification
D000914:Antibodies, Viral