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Table 2 Prevalence of avian influenza virus in different types of samples from field survey

From: Risk factors for avian influenza virus in backyard poultry flocks and environments in Zhejiang Province, China: a cross-sectional study

Types Sum Prevalence (%)
A H5 H7 H9 H5/H7/H9
Poultry samples 16 10 21 (1.30) 0 (0) 0 (0) 0 (0) 0 (0)
 Feces 16 10 21 (1.30) 0 (0) 0 (0) 0 (0) 0 (0)
Environment samples 1561 31 (1.99) 0 (0) 0 (0) 4 (0.26) 4 (0.26)
 Cage swabs 585 7 (1.20) 0 (0) 0 (0) 3 (0.51) 3 (0.51)
 Drinking water samples 519 9 (1.73) 0 (0) 0 (0) 0 (0) 0 (0)
 Sewage samples 82 0 (0) 0 (0) 0 (0) 0 (0) 0 (0)
 Crib swabs 294 13 (4.42) 0 (0) 0 (0) 0 (0) 0 (0)
 Environmental surface swabs 81 2 (2.47) 0 (0) 0 (0) 1 (1.23) 1 (1.23)
  Total 3171 52 (1.64) 0 (0) 0 (0) 4 (0.13) 4 (0.13)
  χ2 2.2825
  P-value 0.1308