Table 2.
Annual average incidence rate of legionellosis per 100 000 residents among all ages and those aged ⩾50 years by investigation area, entire water system area, county and New Jersey, 2003–2007
| All ages | Aged ⩾50 years | |||||
|---|---|---|---|---|---|---|
| No. of cases | Population | Rate | No. of cases | Population | Rate | |
| Investigation Area A | 11 | 44 020 | 25·0 | 11 | 18 045 | 61·0 |
| Investigation Area B | 9 | 34 365 | 26·2 | 9 | 14 045 | 64·1 |
| Entire water system | 29 | 1 021 440 | 2·8 | 26 | 288 585 | 9·0 |
| County | 40 | 1 753 805 | 2·3 | 36 | 485 265 | 7·4 |
| New Jersey | 512 | 42 071 850 | 1·2 | 384 | 12 073 385 | 3·2 |