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Volume 13, Number 11—November 2007

Research

Mycobacterium ulcerans in Mosquitoes Captured during Outbreak of Buruli Ulcer, Southeastern Australia

Paul D.R. Johnson*†‡§Comments to Author , Joseph Azuolas¶, Caroline J. Lavender‡, Elwyn Wishart¶, Timothy P. Stinear§, John A. Hayman‡§, Lynne Brown#, Grant A. Jenkin§, and Janet A.M. Fyfe‡
Author affiliations: *Austin Health, Melbourne, Victoria, Australia; †University of Melbourne, Melbourne, Victoria, Australia; ‡Victorian Infectious Diseases Reference Laboratory, North Melbourne, Victoria, Australia; §Monash University, Melbourne, Victoria, Australia; ¶Department of Primary Industries, Melbourne, Victoria, Australia; #Department of Human Services, Melbourne, Victoria, Australia;

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Table 1

Maximum likelihood estimate (MLE) per 1,000 mosquitoes trapped in Point Lonsdale, Australia, and tested by PCR for insertion sequence IS2404 of Mycobacterium ulcerans

Species No. mosquitoes No. positive pools/no. pools tested MLE* 95% Confidence interval
Aedes camptorhynchus 10,558 41/757 3.98 2.90–5.35
Coquillettidia linealis 480 4/57 8.53 2.80–20.34
Ae. notoscriptus 221 1/49 4.47 0.26–21.37
Culex australicus 76 1/27 12.78 0.77–59.74
Ochlerotatus alboannulatus 52 0/16 0 0.00–58.19
Anopheles annulipes s. l. 49 1/18 22.44 1.24–115.30
Cx. globocoxitus 43 0/20 0 0–76.19
Cx. annulirostris 10 0/2 0 0–161.60
Cx. molestus 6 0/6 0 0–390.33
Cx. quinquefasciatus 5 0/2 0 0–319.26
Oc. australis 3 0/2 0 0–499.14
Cx. pipiens gp.
1
0/1
0
0–793.45
Total 11,504 48/957 4.28 3.20–5.62

*MLE bias was corrected when >1 pool was positive; otherwise uncorrected.

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