Seroprevalence for equine infectious anaemia in Equidae seized in the municipality of Petropolis, State of Rio de Janeiro, Brazil, 2015/2018/Soroprevalencia para anemia infecciosa equina em Equideos apreendidos no municipio de Petropolis, RJ, Brasil, 2015/2018

Equine infectious anaemia (EIA) is a globally distributed disease caused by a lentivirus. EIA is a notifiable disease that should be reported to the Official Veterinary Service (SVO). Outbreaks are controlled by sacrificing the EIA-positive animals. The study analysed the prevalence of EIA in 165 Equidae seized on public roads in the municipality of Petropolis, Rio de Janeiro, Brazil, from 2015 to 2018. After the seizure and identification of the Equidae, blood was collected to diagnose EIA. A prevalence of 11.8% was observed among the Equidae seized, and the main risk factor was the region of seizure. A kernel-smoothed map showed areas with the highest density of EIA-positive Equidae in the centre and to the east of the study area. In this region, the chance of seizing an equine positive for EIA was greater (OR=3.6) relative to the remaining region. The implementation and maintenance of Equidae seizures and subsequent diagnostic testing for EIA in the municipality of Petropolis were shown to have great importance for the control and prevention of the disease. Indicating the place of seizure on the identification cards of the animals enabled delineation of the locations in the municipality of Petropolis, that had a higher risk of EIA-positive animals. Key words: Equine, spatial distribution, infectious diseases. A anemia infecciosa equina (AIE) e uma doenca globalmente distribuida causada por um lentivirus. AIE e uma doenca de notificacao obrigatoria que deve ser relatada ao Servico Veterinario Oficial (SVO), e os surtos sao controlados pelo sacrificio dos animais positivos para AIE. O presente estudo analisou a prevalencia de AIE em 165 equideos apreendidos em vias publicas no municipio de Petropolis, estado do Rio de Janeiro, Brasil, no periodo de 2015 a 2018. Apos a apreensao e identificacao dos equideos seu sangue foi coletado para diagnosticar a AIE. Observou-se uma prevalencia real de 11,8% entre os equideos apreendidos, sendo que o principal fator de risco identificado foi a regiao de apreensao. O Mapa de Kernel mostrou que as areas com maior densidade de equideos positivos estavam no centro e leste da area de estudo. Nesta regiao, houve maior chance (OR = 3,6) de apreender um animal positivo para AIE em relacao ao da outra regiao, composto pelos 34 locais restantes. A implementacao e manutencao de apreensao de equideos e posterior teste de diagnostico para AIE no municipio de Petropolis, RJ, mostrou-se de grande importancia para o controle e preven