Volume 18, Number 11—November 2012
Dispatch
Effect of Latitude on Seasonality of Tuberculosis, Australia, 2002–2011
Jennifer H. MacLachlan
, Caroline J. Lavender, and Benjamin C. Cowie
, Caroline J. Lavender, and Benjamin C. CowieTable
Number and rate* of tuberculosis notifications, Australia, 2002–2011
| Month | South |
Central |
North |
Total |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean cases (range) | Rate | Mean cases (range) | Rate | Mean cases (range) | Rate | Mean cases (range) | Rate | ||||
| Jan | 30.2 (25–37) | 5.3 | 48.4 (35–62) | 4.5 | 13.7 (8–20) | 3.2 | 92.3 (73–103) | 4.5 | |||
| Feb | 27.6 (21–37) | 4.8 | 47.5 (38–58) | 4.5 | 11 (5–14) | 2.6 | 86.1 (74–105) | 4.2 | |||
| Mar | 27.8 (17–40) | 4.7 | 47.6 (36–56) | 4.5 | 15.6 (8–24) | 3.6 | 91.0 (66–109) | 4.4 | |||
| Apr | 29.4 (18–41) | 4.9 | 43.8 (21–65) | 4.2 | 13.9 (6–20) | 3.2 | 87.1 (54–114) | 4.2 | |||
| May | 25.3 (10–35) | 4.4 | 48.4 (40–58) | 4.6 | 14.9 (10–29) | 3.5 | 88.6 (74–104) | 4.3 | |||
| Jun | 24 (16–39) | 4.0 | 44.2 (35–56) | 4.2 | 13.3 (8–26) | 3.1 | 81.5 (62–98) | 3.9 | |||
| Jul | 32.9 (26–49) | 5.6 | 46.4 (36–65) | 4.4 | 13.4 (7–24) | 3.1 | 92.7 (73–110) | 4.5 | |||
| Aug | 31.9 (18–42) | 5.6 | 47.6 (34–57) | 4.5 | 15.8 (10–26) | 3.7 | 95.3 (72–121) | 4.6 | |||
| Sep | 37.2 (27–44) | 6.4 | 54.3 (45–70) | 5.2 | 16 (8–26) | 3.7 | 107.5 (85–135) | 5.2 | |||
| Oct | 39.7 24–61) | 6.7 | 57.9 (42–89) | 5.6 | 17.3 (13–30) | 4.0 | 114.9 (81–166) | 5.5 | |||
| Nov | 38.1 (27–50) | 6.5 | 53.9 (44–78) | 5.2 | 18.5 (13–22) | 4.3 | 110.5 (94–122) | 5.3 | |||
| Dec | 41.6 (25–58) | 7.0 | 52.9 (33–67) | 5.1 | 15.6 (9–31) | 3.6 | 110.1 (81–139) | 5.3 | |||
*Per 100,000 population.
