Table 1. AIV detected from chicken carcasses sold at live poultry markets, dressed poultry stalls, or supermarkets, Guangzhou, Guangdong Province, China, June–December 2016*.
| Swab type |
No. qRT-PCR positive/no. tested (%) |
|
No. culture positive/no. tested (%)† | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Dressed poultry stall‡ |
Retail market§ |
Supermarket¶ |
p value# |
Dressed poultry stall‡ |
Retail market§ |
Supermarket¶ |
p value# |
||
| Oropharyngeal | 67/121 (55.4) | 207/277 (74.7) | 2/62 (3.2) | 0.097 | 44/121 36.4) | 158/277 (57.0) | 0/62 (0) | 0.026 | |
| Cloacal | 55/120 (45.8) | 177/265 (66.8) | 4/62 (6.5) | 0.053 | 38/120 31.7) | 133/265 (50.2) | 0/62 (0) | 0.033 | |
| Visceral cavity | 48/118 (40.7) | 203/329 (61.7) | 2/23 (8.7) | 0.033 | 23/118 19.5) | 93/329 (28.3) | 0/23 (0) | 0.151 | |
*AIV, avian influenza virus; qRT-PCR, quantitative real-time reverse transcription PCR. †All qRT-PCR–positive samples were tested for infectivity in MDCK cells, and all qRT-PCR–negative samples were assumed negative for AIV infectivity. ‡Chickens centrally slaughtered at the wholesale market are sold at designated dressed poultry stalls without live poultry on site. §Data from 3 retail markets located at different districts in Guangzhou city. ¶Data from 3 supermarket chains with poultry supplied by different industrial suppliers. #Comparison of AIV-positive rates between dressed poultry stalls and retail markets by Fisher exact test.