一起输入性小鹅瘟疫情的紧急流行病学调查OA

On September 30,2023,an outbreak occurred in goslings purchased by a goose farm in Tengchong City,Yunnan Province.The goslings showed the symptoms of depression,loss of appetite,diarrhoea,runny nose and a large number of death.In order to identify the cause of the outbreak,an emergency epidemiological investigation was carried out.The results showed that a total of 2 567 goslings were attacked and 2 450 died,with an attack rate of 98.7%(2 567/2 600)and a fatality rate of 95.4%(2 450/2 567).Based on the results of epidemiological investigation,clinical symptoms,pathological autopsy and laboratory testing,the outbreak was confirmed as a gosling plague caused by goose parvovirus infection,which was mainly caused by informal introduction of goslings,long-distance transport stress and improper brooding.To this end,farms should standardize their introduction of animals and improve feeding management,and relevant authorities should increase their efforts in quarantine supervision to avoid any occurrence of entry outbreak as much as possible.