Table 3.
Case numbers and incidence rate of hepatitis A in county M (1991–2010)
| Age | No. | Incidence | No. | Incidence | No. | Incidence | No. | Incidence | No. | Incidence |
|---|---|---|---|---|---|---|---|---|---|---|
| 1991 | 1992 | 1993 | 1994 | 1995 | ||||||
| 0–6 | 3 | 2·4183 | 5 | 3·9715 | 28 | 21·9784 | 54 | 41·7979 | 59 | 45·0038 |
| 7–15 | 4 | 3·0776 | 7 | 5·3068 | 10 | 7·4919 | 10 | 7·3878 | 17 | 12·3764 |
| ⩾16 | 10 | 1·2704 | 5 | 0·6259 | 9 | 1·1133 | 31 | 3·7815 | 40 | 4·8084 |
| Total | 17 | 1·6328 | 17 | 1·6088 | 47 | 4·3956 | 95 | 8·7612 | 116 | 10·5422 |
| 1996 | 1997 | 1998 | 1999 | 2000 | ||||||
| 0–6 | 29 | 21·8873 | 54 | 40·3600 | 29 | 21·4832 | 136 447 | 13·9248 | 0 | 0·0000 |
| 7–15 | 9 | 6·4833 | 20 | 14·2672 | 28 | 19·7976 | 142 960 | 3·4975 | 4 | 2·7704 |
| ⩾16 | 17 | 2·0220 | 23 | 2·7091 | 30 | 3·5024 | 865 807 | 1·6170 | 20 | 2·2872 |
| Total | 56 | 5·0357 | 97 | 8·6378 | 87 | 7·6789 | 1 145 216 | 3·3182 | 24 | 2·0750 |
| 2001 | 2002 | 2003 | 2004 | 2005 | ||||||
| 0–6 | 0 | 0·0000 | 0 | 0·0000 | 0 | 0·0000 | 0 | 0·0000 | 2 | 1·3654 |
| 7–15 | 0 | 0·0000 | 3 | 2·0389 | 4 | 2·6920 | 7 | 4·5979 | 2 | 1·3032 |
| ⩾16 | 16 | 1·8119 | 23 | 2·5811 | 32 | 3·5560 | 38 | 4·1213 | 20 | 2·1518 |
| Total | 16 | 1·3699 | 29 | 2·4604 | 41 | 3·4445 | 45 | 3·6897 | 24 | 1·9522 |
| 2006 | 2007 | 2008 | 2009 | 2010 | ||||||
| 0–6 | 28 | 18·8584 | 11 | 7·2459 | 1 | 0·6400 | 3 | 1·9209 | 1 | 0·6362 |
| 7–15 | 9 | 5·7855 | 10 | 6·2871 | 5 | 3·0541 | 6 | 3·6667 | 0 | 0·0000 |
| ⩾16 | 12 | 1·2737 | 16 | 1·6610 | 14 | 1·4120 | 11 | 1·1100 | 4 | 0·4011 |
| Total | 49 | 3·9321 | 37 | 2·9039 | 20 | 1·5250 | 20 | 1·5258 | 5 | 0·3790 |