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Volume 16, Number 2—February 2010

Bordetella pertussis Clones Identified by Multilocus Variable-Number Tandem-Repeat Analysis

Jacob Kurniawan, Ram P. Maharjan, Wai-Fong Chan, Peter R. Reeves, Vitali Sintchenko, Gwendolyn L. Gilbert, Frits R. Mooi, and Ruiting LanComments to Author 
Author affiliations: University of New South Wales, Sydney, New South Wales, Australia (J. Kurniawan, R.P. Maharjan, W.-F. Chan, R. Lan); University of Sydney, Sydney (P.R. Reeves, V. Sintchenko, G.L. Gilbert); Westmead Hospital, Westmead, New South Wales, Australia (V. Sintchenko, G.L. Gilbert); National Institute for Public Health and the Environment, Bilthoven, the Netherlands (F.R. Mooi).

Main Article

Table 2

Diversity of variable-number tandem-repeat analysis loci Bordetella pertussis isolates*

Locus No. repeats Global (this study)
Australia (this study)
The Netherlands (10)
No. alleles D No. alleles D No. alleles D
VNTR1 2–12 6 0.58 4 0.63 7 0.26
VNTR2 2–5 4 0.02 2 0.01 3 N/A
VNTR3a 2–8 4 0.40 4 0.43 10 0.18
VNTR3b 0–10 5 0.21 5 0.21 4 0.15
VNTR4 2–9 7 0.34 5 0.24 8 0.21
VNTR5 3–9 6 0.20 4 0.19 7 0.18
VNTR6 2–11 8 0.72 5 0.70 8 0.60
VNTR7 3–4 2 0.01 1 0.00 NA NA
VNTR8 2–4 3 0.16 2 0.03 NA NA

*D, Simpson index of diversity; VNTR, variable-number tandem-repeat; NA, not applicable.

Main Article

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Main Article

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