A persistent epidemic of porcine epidemic diarrhoea virus infection by serological survey of commercial pig farms in northern Vietnam

Table 1 Proportion of PEDV seropositive farms and pigs based on locality

	No. of seropositive farms or pigs/No. examined farms or pigs
Location	Hai Duong	Hung Yen	Thai Binh
Farms	9/10	10/10	10/10
No. of pigs	172/200	178/200	183/200

ISSN: 1746-6148