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. 2014 Mar 31;14:175. doi: 10.1186/1471-2334-14-175

Table 3.

Detection of H7N9 nucleic acid in environmental specimens from live poultry markets

Type of specimen Case-related specimens
Non-case specimens
Tested N H7N9+ N + rate (%) Tested N H7N9+ N + rate (%)
Feces
13
10
76.92
10
2
20.00
Anal swab
15
9
60.00
-
-
-
Throat swab
10
5
50.00
1
1
100.00
Drinking water
-
-
-
8
3
37.50
Waste water
13
5
38.46
6
2
33.33
Feather smear
16
11
68.75
5
2
40.00
Cage smear
7
5
71.43
17
5
29.41
Others
16
13
81.82
22
7
31.82
Total 90 58 64.44 69 22 31.88

Note: −: no specimen of the type available; in the specimens collected from the live poultry markets, the positive rate for H7N9 nucleic acid was markedly higher in the case-related specimens than in the non-case ones with a statistically significant difference by Pearson χ 2 test (χ 2  = 16.563, p < 0.05).