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Volume 18, Number 5—May 2012

Research

Temporal Trends in Bordetella pertussis Populations, Denmark, 1949–2010

Randi Føns PetersenComments to Author , Tine Dalby, Ditte Marie Dragsted, Frits Mooi, and Lotte Lambertsen
Author affiliations: Statens Serum Institut, Copenhagen, Denmark (R.F. Petersen, T. Dalby, L. Lambertsen); private practitioner, Frederiksberg, Denmark (D.M. Dragsted); National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands (F. Mooi)

Main Article

Figure 3

Temporal trends in the frequencies of the alleles of pertactin (prn) (A), the pertussis toxin subunit S1 (ptxA) (B), the pertussis toxin promoter (ptxP) (C), and the tracheal colonization factor A (tcfA) (D) of Bordetella pertussis isolates collected in Denmark, 1949–2010. The number of isolates analyzed each year/years is given above each column. Years containing 1 or 2 isolates are combined with another year in the same time period, as indicated

Figure 3. . . Temporal trends in the frequencies of the alleles of pertactin (prn) (A), the pertussis toxin subunit S1 (ptxA) (B), the pertussis toxin promoter (ptxP) (C), and the tracheal colonization factor A (tcfA) (D) of Bordetella pertussis isolates collected in Denmark, 1949–2010. The number of isolates analyzed each year/years is given above each column. Years containing 1 or 2 isolates are combined with another year in the same time period, as indicated

Main Article

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