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Table 2 Weekly mean of mortality numbers and proportions of specimens positive for influenza (virus %) during the periods with low, middle and high levels of environmental factors
| Mean (SD) | ||||
|---|---|---|---|---|
| City | Low | Middle | High | |
| Temperature | ||||
| All-cause | Guangzhou | 520.5 (81.4) | 424.0 (52.1) | 407.3 (49.0) |
| Hong Kong | 798.6 (73.5) | 677.5 (48.6) | 655.9 (36.6) | |
| CRD | Guangzhou | 300.5 (61.6) | 227.1 (43.6) | 213.4 (37.4) |
| Hong Kong | 382.7 (47.5) | 296.4 (35.3) | 275.6 (25.4) | |
| P&I | Guangzhou | 11.3 (4.9) | 9.7 (4.3) | 9.5 (3.3) |
| Hong Kong | 90.8 (15.1) | 73.6 (14.1) | 72.1 (11.9) | |
| Accident | Hong Kong | 28.0 (7.6) | 27.8 (6.9) | 28.2 (5.2) |
| Virus % | Guangzhou | 5.6 (5.6) | 9.2 (11.9) | 7.7 (8.4) |
| Hong Kong | 11.1 (9.1) | 12.1 (11.7) | 13.8 (10.8) | |
| Relative humidity | ||||
| All-cause | Guangzhou | 441.9 (87.7) | 441.0 (72.9) | 451.9 (64.2) |
| Hong Kong | 722.6 (92.4) | 693.7 (71.4) | 699.7 (71.1) | |
| CRD | Guangzhou | 241.1 (65.5) | 239.9 (56.7) | 247.1 (54.8) |
| Hong Kong | 328.0 (65.6) | 306.6 (51.2) | 309.9 (49.5) | |
| P&I | Guangzhou | 9.3 (4.1) | 10.1 (4.1) | 10.6 (4.6) |
| Hong Kong | 76.9 (16.8) | 77.5 (16.0) | 78.0 (14.7) | |
| Accident | Hong Kong | 26.5 (7.7) | 28.3 (5.8) | 28.7 (7.1) |
| Virus % | Guangzhou | 2.0 (3.3) | 7.1 (8.2) | 15.8 (12.2) |
| Hong Kong | 4.3 (6.4) | 14.8 (10.9) | 15.2 (10.6) | |
| Vapor pressure | ||||
| All-cause | Guangzhou | 498.2 (91.7) | 432.1 (59.8) | 413.4 (53.0) |
| Hong Kong | 790.8 (79.4) | 680.6 (53.8) | 657.7 (36.1) | |
| CRD | Guangzhou | 284.4 (68.8) | 233.2 (48.2) | 217.2 (42.1) |
| Hong Kong | 376.0 (53.7) | 299.1 (39.0) | 277.0 (25.2) | |
| P&I | Guangzhou | 10.6 (5.1) | 9.9 (3.6) | 9.6 (4.5) |
| Hong Kong | 89.2 (16.5) | 74.3 (14.3) | 72.1 (11.8) | |
| Accident | Hong Kong | 28.2 (7.8) | 28.0 (6.7) | 27.6 (5.4) |
| Virus % | Guangzhou | 4.3 (5.3) | 8.3 (10.5) | 10.8 (11.1) |
| Hong Kong | 9.9 (9.4) | 12.1 (11.2) | 14.9 (11.3) | |
