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. 2018 Dec 18;18:672. doi: 10.1186/s12879-018-3608-5

Fig. 1.

Fig. 1

Number of serotypes by study site and age group; a) Matiari (rural site) children 3-11 months of age; b) Karachi (urban site) children 3-11 months of age; and c) Karachi (urban site) children 12-59 months of age