Volume 13, Number 11—November 2007
Research
Mycobacterium ulcerans in Mosquitoes Captured during Outbreak of Buruli Ulcer, Southeastern Australia
Paul D.R. Johnson*†‡§
, Joseph Azuolas¶, Caroline J. Lavender‡, Elwyn Wishart¶, Timothy P. Stinear§, John A. Hayman‡§, Lynne Brown#, Grant A. Jenkin§, and Janet A.M. Fyfe‡
, Joseph Azuolas¶, Caroline J. Lavender‡, Elwyn Wishart¶, Timothy P. Stinear§, John A. Hayman‡§, Lynne Brown#, Grant A. Jenkin§, and Janet A.M. Fyfe‡
Table 2
Relationship between cases of Buruli ulcer, mosquitoes tested, and maximum likelihood estimate (MLE) per 1,000 mosquitoes trapped in Victoria, Australia, and tested by PCR for insertion sequence IS2404 of Mycobacterium ulcerans*
| Region | No. cases past 5 y | No. mosquitoes tested (% Aedes camptorhynchus)† | No. pools positive | MLE (95% CI) |
|---|---|---|---|---|
| Point Lonsdale | 79 | 11,504 (91.8) | 48 | 4.2 (3.08–5.53) |
| Bellarine Peninsula (excluding Point Lonsdale) | 30 | 2,119 (88.7) | 3 | 1.42 (0.37–3.85) |
| Bass coast Shire including Phillip Island | 2 | 795 (82.1) | 1 | 1.25 (0.07–6.03) |
| Central and northern Victoria (Mildura, Swan Hill, Moira, Shepparton) |
0 |
471 (48.0) |
0 |
0 (0–7.34) |
| Total | 111 | 14,889 (89.4) | 52 | 3.57 (2.70–4.64) |
*MLE bias was corrected when >1 pool was positive, otherwise uncorrected. CI, confidence interval
†p value = 0.07 (χ2: 4 × 2 table; pools positive/no. tested).
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