Effect of Nonpharmaceutical Interventions in Preventing COVID-19 on the Circulation of Avian Influenza Virus in Wuhan, Hubei Province, China
Table 2
AIV, H5, H9, Untyped, and coexistence of H5 and H9 nucleic acid positive rate in different districts of Wuhan (positive rates (%) = (number of positive samples/number of samples collected) × 100).
Categories
HS
CD
DXH
HP
JX
XZ
HN
Subtypes
H5
1.93 (11/570)
1.99 (8/403)
4.72 (15/318)
3.33 (12/360)
1.62 (5/309)
0.62 (2/320)
1.75 (3/171)
H9
13.51 (77/570)
12.16 (49/403)
29.56 (94/318)
11.39 (41/360)
5.18 (16/309)
5.94 (19/320)
15.79 (27/171)
Untyped
4.04 (23/570)
2.23 (9/403)
5.35 (17/318)
5.00 (18/360)
2.27 (7/309)
0.31 (1/320)
2.34 (4/171)
H5 + H9
5.26 (30/570)
1.99 (8/403)
2.83 (9/318)
1.39 (5/360)
0.97 (3/309)
1.87 (6/320)
7.60 (13/171)
Total
24.74 (141/570)
18.36 (74/403)
42.45 (135/318)
21.11 (76/360)
10.03 (31/309)
8.75 (28/320)
27.49 (47/171)
Periods
Non-NPIs
37.33 (56/150)
23.53 (36/153)
45.27 (67/148)
31.11 (56/180)
17.45 (26/149)
13.33 (20/150)
40.54 (45/111)
NPIs
20.24 (85/420)
15.20 (38/250)
40.00 (68/170)
11.11 (20/180)
3.12 (5/160)
4.71 (8/170)
3.33 (2/60)
χ2
17.350
575.202
569.607
601.045
598.128
578.116
653.225
p
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
<0.001
Non-NPIs corresponded to the stage before COVID-19, and NPIs corresponded to the stage after COVID-19. The period from January 2018 to January 2020 was defined as before COVID-19, while the period from June 2020 to December 2022 was defined as after COVID-19. The non-H5/7/9 subtypes were referred to as Untyped. Abbreviations. CD, Caidian; DXH, Dongxihu; HN, Hannan; HP, Huangpi; HS, Hongshan; JX, Jiangxia; and XZ, Xinzhou.
