Table 1 Influenza A, H5, H7 and H9 nucleic acid positivity rates of different sites
Type/subtype | Positivity rate (%) | ||||
|---|---|---|---|---|---|
(Number of positive samples/Number of samples collected) | |||||
Year | LPM | Slaughterhouse | Backyard | Poultry farm | Wild bird habitat |
Influenza A | |||||
2014 | 30.61 (12050/39365) | 16.67 (372/2232) | 1.69 (82/4847) | 2.31 (242/10458) | 4.12 (86/2086) |
2015 | 30.2 (14245/47174) | 19.16 (396/2067) | 4.23 (185/4373) | 2.85 (270/9470) | 0.53 (11/2080) |
2016 | 35.24 (17910/50882) | 25.04 (475/1897) | 5.4 (285/5274) | 4.69(546/11649) | 0.35(7/2003) |
2017 | 25.98 (20620/79377) | 23.70 (720/3039) | 2.83 (341/12036) | 3.33 (508/15251) | 0.33 (10/3076) |
2018 | 30.06 (14428/47999) | 30.22 (727/2406) | 3.04 (246/8098) | 3.10 (332/10705) | 0.19 (5/2683) |
Mean ± SD | 30.42 ± 3.28 | 22.96 ± 5.28 | 3.44 ± 1.41 | 3.26 ± 0.88 | 1.1 ± 1.69 |
A/H5 | |||||
2014 | 7.2 (2833/39365) | 3.18 (71/2232) | 0.21 (10/4847) | 0.73 (76/10458) | 0 (0/2086) |
2015 | 5.94 (2802/47174) | 3.87 (80/2067) | 0.8 (225/4373) | 0.29 (27/9470) | 0.1 (2/2080) |
2016 | 6.01(3057/50882) | 5.01 (95/1897) | 0.36 (19/5274) | 0.29(34/11649) | 0.1(2/2003) |
2017 | 3.24 (2572/79377) | 2.47 (75/3039) | 0.19 (23/12036) | 0.19 (29/15251) | 0 (0/3016) |
2018 | 5.54 (2658/47999) | 6.48 (156/2406) | 0.3 (24/8098) | 0.45 (48/10705) | 0 (0/2683) |
Mean ± SD | 5.59 ± 1.45 | 4.2 ± 1.58 | 0.37 ± 0.24 | 0.39 ± 0.21 | 0.04 ± 0.05 |
A/H7 | |||||
2014 | 5.43 (2139/39365) | 0.76 (17/2232) | 0.52 (25/4847) | 0.71 (74/10458) | 1.39 (29/2086) |
2015 | 4.73 (2231/47174) | 2.18 (45/2067) | 0.8 (35/4373) | 0.04 (4/9470) | 0 (0/2080) |
2016 | 5.57 (2832/50882) | 3.22 (61/1897) | 1.31 (69/5274) | 0.25 (29/11649) | 0.05(1/2003) |
2017 | 5.15 (4090/79377) | 2.57 (78/3039) | 0.75 (90/12036) | 1.36 (207/15251) | 0 (0/3016) |
2018 | 0.42 (200/47999) | 1.66 (40/2406) | 0.14 (11/8098) | 0.05 (5/10705) | 0 (0/2683) |
Mean ± SD | 4.26 ± 2.17 | 2.08 ± 093 | 0.7 ± 0.42 | 0.48 ± 0.56 | 0.28 ± 0.6 |
A/H9 | |||||
2014 | 15.68 (6173/39365) | 8.47 (189/2232) | 0.8 (39/4847) | 1.1 (115/10458) | 0.48 (10/2086) |
2015 | 18.04 (8509/47,174) | 9.82 (203/2067) | 2.74 (120/4373) | 1.19 (113/9470) | 0.24 (5/2080) |
2016 | 19.51 (9915/5088) | 13.86 (263/1897) | 3.3 (174/5274) | 1.48 (172/11649) | 0.2 (4/2003) |
2017 | 15.05 (11950/79377) | 14.61 (444/3039) | 1.37 (165/12036) | 1.24 (189/15251) | 0.2 (6/3016) |
2018 | 20.61 (9893/47999) | 16.38 (394/2406) | 1.68 (136/8098) | 2.10 (225/10705) | 0.112 (3/2683) |
Mean ± SD | 17.78 ± 2.39 | 12.63 ± 3.34 | 1.98 ± 1.02 | 1..42 ± 0.4 | 0.25 ± 0.14 |