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Fig. 2 | BMC Infectious Diseases

Fig. 2

From: Increase in pertussis cases along with high prevalence of two emerging genotypes of Bordetella pertussis in Perú, 2012

Fig. 2

Distribution of pertussis cases detected in Perú during 2012 according to age (Panel a) or vaccination status of the patients (Panel b). In the figures, the percentage of the total number of suspected cases that were PCR-negative (blue bars) and PCR-positive (red bars) is plotted on the ordinates for each of the age ranges (Panel a) and for each of the vaccination doses (Panel b) indicated on the abscissas. The first three doses correspond to the pentavalent vaccine and the booster dose to the DTwP vaccine. The asterisk (*) indicates a significant difference in the chi-square test (p <0.00001)

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