1. Haemophilus influenzae serotype b conjugate vaccine failure in twelve countries with established national childhood immunization programmes 
S. Ladhani, M.P.E. Slack, M.E. Ramsay 
Clinical Microbiology and Infection 
Volume 16, Issue 7, Pages (July 2010)
DOI: /j x
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2. FIG. 1
Clinical presentation of children with Hib vaccine failure (n = 423) in different age groups.
Clinical Microbiology and Infection  , DOI: ( /j x)
Copyright © 2010 European Society of Clinical Infectious Diseases Terms and Conditions