Table 1.
Cumulative monthly incidence rate of acute toxoplasmic lymphadenopathy, summarized across the 15-year study period (1997–2011)
| Month | Cumulative no. of ATL cases (per month) | Cumulative no. of T. gondii IgG tests (per month) | Cumulative monthly IR* (95% CI) |
|---|---|---|---|
| January | 6 | 6 746 | 0·9 (0·3–1·9) |
| February | 9 | 6 434 | 1·4 (0·6–2·7) |
| March | 6 | 7 022 | 0·9 (0·3–1·9) |
| April | 4 | 6 402 | 0·6 (0·2–1·6) |
| May | 8 | 6 251 | 1·3 (0·6–2·5) |
| June | 7 | 6 271 | 1·1 (0·4–2·3) |
| July | 6 | 6 108 | 1·0 (0·4–2·1) |
| August | 11 | 6 381 | 1·7 (0·9–3·1) |
| September | 17 | 6 502 | 2·6 (1·5–4·1) |
| October | 11 | 6 654 | 1·7 (0·8–3·0) |
| November | 9 | 5 893 | 1·5 (0·7–2·9) |
| December | 18 | 6 524 | 2·8 (1·6–4·4) |
| Across all months | 112 | 77 188 | 1·5 (1·2–1·7) |
ATL, Acute toxoplasmic lymphadenopathy; IR, incidence rate; CI, confidence interval. *Per 1000 T. gondii IgG tests.