Table 2 Monthly results of surveillance for H7N9 virus at different premises of Zhejiang Province, China, March 2013-February 2015
Month | Positive rate, % (positive specimens/total specimens) | ||||||
|---|---|---|---|---|---|---|---|
Total | Live poultry markets | Poultry rearing farms | Concentrated areas of backyard poultry farms | Slaughtering and processing plants | Habitats for migratory birds | Others | |
2013–3 | 0.0 (0/119) | 0.0 (0/77) | 0.0 (0/24) | 0.0 (0/10) | 0/0 | 0/0 | 0.0 (0/8) |
2013–4 | 1.1 (11/1045) | 2.3 (7/303) | 1.0 (4/382) | 0.0 (0/201) | 0.0 (0/17) | 0.0 (0/59) | 0.0 (0/83) |
2013–5 | 0.0 (0/96) | 0/0 | 0.0 (0/46) | 0.0 (0/30) | 0/0 | 0.0 (0/20) | 0/0 |
2013–6 | 0.0 (0/60) | 0.0 (0/19) | 0.0 (0/35) | 0.0 (0/6) | 0/0 | 0/0 | 0/0 |
2013–7 | 0.0 (0/57) | 0.0 (0/20) | 0.0 (0/31) | 0/0 | 0/0 | 0/0 | 0.0 (0/6) |
2013–8 | 0.0 (0/62) | 0.0 (0/43) | 0.0 (0/12) | 0/0 | 0/0 | 0.0 (0/7) | 0/0 |
2013–9 | 0.0 (0/60) | 0.0 (0/49) | 0.0 (0/11) | 0/0 | 0/0 | 0/0 | 0/0 |
Total of the 1st wave | 0.7 (11/1499) | 1.4 (7/511) | 0.7 (4/541) | 0.0 (0/247) | 0.0 (0/17) | 0.0 (0/86) | 0.0 (0/97) |
2013–10 | 2 (6/301) | 3.1 (6/195) | 0.0 (0/75) | 0.0 (0/25) | 0/0 | 0/0 | 0.0 (0/6) |
2013–11 | 1.1 (4/372) | 1.5 (4/266) | 0.0 (0/62) | 0.0 (0/19) | 0/0 | 0.0 (0/5) | 0.0 (0/20) |
2013–12 | 3.5 (11/318) | 4.2 (11/262) | 0.0 (0/30) | 0/0 | 0.0 (0/8) | 0.0 (0/5) | 0.0 (0/13) |
2014–1 | 10.2 (259/2551) | 11.3 (259/2299) | 0.0 (0/105) | 0.0 (0/133) | 0.0 (0/2) | 0.0 (0/9) | 0.0 (0/3) |
2014–2 | 2.7 (29/1073) | 4.0 (29/732) | 0.0 (0/141) | 0.0 (0/146) | 0.0 (0/6) | 0/0 | 0.0 (0/48) |
2014–3 | 1.6 (9/554) | 3.7 (9/242) | 0.0 (0/146) | 0.0 (0/114) | 0.0 (0/18) | 0.0 (0/5) | 0.0 (0/29) |
2014–4 | 1.1 (6/545) | 3.1 (6/194) | 0.0 (0/168) | 0.0 (0/164) | 0.0 (0/5) | 0.0 (0/14) | 0/0 |
2014–5 | 0.3 (2/714) | 0.7 (2/303) | 0.0 (0/83) | 0.0 (0/279) | 0.0 (0/5) | 0.0 (0/14) | 0.0 (0/30) |
2014–6 | 3.4 (10/290) | 6.8 (8/118) | 2.6 (2/78) | 0.0 (0/53) | 0.0 (0/25) | 0.0 (0/16) | 0/0 |
2014–7 | 1.7 (6/358) | 2.7 (6/219) | 0.0 (0/72) | 0.0 (0/22) | 0.0 (0/10) | 0.0 (0/9) | 0.0 (0/26) |
2014–8 | 0.0 (0/519) | 0.0 (0/298) | 0.0 (0/104) | 0.0 (0/58) | 0.0 (0/32) | 0.0 (0/24) | 0.0 (0/3) |
2014–9 | 2.1 (9/419) | 3.8 (9/234) | 0.0 (0/80) | 0.0 (0/43) | 0.0 (0/18) | 0.0 (0/22) | 0.0 (0/22) |
2014–10 | 3.9 (25/633) | 5.9 (25/424) | 0.0 (0/119) | 0.0 (0/18) | 0.0 (0/12) | 0.0 (0/11) | 0.0 (0/49) |
Total of the 2nd wave | 4.3 (376/8647) | 6.5 (374/5786) | 0.2 (2/1263) | 0.0 (0/1074) | 0.0 (0/141) | 0.0 (0/134) | 0.0 (0/249) |
2014–11 | 3(17/572) | 5.0 (17/343) | 0.0 (0/69) | 0.0 (0/18) | 0.0 (0/62) | 0.0 (0/45) | 0.0 (0/35) |
2014–12 | 2.6(21/808) | 3.8 (19/499) | 0.0 (0/142) | 0.0 (0/70) | 8.0 (2/25) | 0.0 (0/44) | 0.0 (0/28) |
2015–1 | 20.2(242/1197) | 24.3 (198/815) | 0.0 (0/151) | 0.0 (0/32) | 17.8 (13/73) | 0.0 (0/6) | 25.8 (31/120) |
2015–2 | 13.5(201/1484) | 16.8 (170/1012) | 0.0 (0/127) | 1.5 (2/130) | 7.7 (2/26) | 0.0 (0/8) | 14.9 (27/181) |
Total of the 3rd wave | 11.8 (481/4061) | 15.1 (404/2669) | 0.0 (0/489) | 0.8 (2/250) | 9.1 (17/186) | 0.0 (0/103) | 15.9 (58/364) |
Total | 6.1(868/14207) | 8.8 (785/8966) | 0.3 (6/2293) | 0.1 (2/1571) | 4.9 (17/344) | 0.0 (0/323) | 8.2 (58/710) |