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Sample type Collected samples No. (%)a NDV-positive samples No. (%)b Class Ⅰ Class Ⅱ Live poultry markets Oropharyngeal and cloacal Speciesc 1608 (100%) 26 (1.6%) 3 (0.2%) Chickens 639 (39.7%) 23 (1.4%) 3 (0.2%) Ducks 380 (23.6%) 0 (0.0%) 0 (0.0%) Geese 582 (36.2%) 3 (0.2%) 0 (0.0%) Pigeons 7 (0.4%) 0 (0.0%) 0 (0.0%) Farms (chickens)d Layers Farm-A 84(21.0%) 0 (0.0%) 0 (0.0%) Farm-B 84(21.0%) 0 (0.0%) 0 (0.0%) Farm-C 84(21.0%) 0 (0.0%) 0 (0.0%) Breeders Farm-D 74(18.5%) 0 (0.0%) 0 (0.0%) Farm-E 74(18.5%) 0 (0.0%) 0 (0.0%) Farms (ducks)e Muscovy ducks Farm-A 200(25.0%) 7(3.5%) 0 (0.0%) Meat ducks Farm-B 200(25.0%) 0 (0.0%) 0 (0.0%) Mixed ducks Farm-C 200(25.0%) 3 (1.5%) 0 (0.0%) Farm-D 200(25.0%) 1 (0.5%) 0 (0.0%) Samples of each flock and Newcastle disease virus (NDV)-positive samples by RT-PCR were collected from LBMs and commercial poultry farms in Eastern China during 2017–2018
aPercentage of samples collected
bPercentage of samples positive for NDV
cPercentage of samples collected from each flock at LBMs
dPercentage of samples collected from each flock at commercial chicken farms
ePercentage of samples collected from each flock at commercial duck farmsTable 1. Information for samples at live bird markets (LBMs) and commercial poultry farms in Eastern China during 2017–2018
Figure 2 个
Table 1 个