Emerging Infectious Disease ISSN: 1080-6059

Haemophilus influenzae Type b Reemergence after Combination Immunization

Nik G. Johnson*, Jens U. Ruggeberg*, Gail F. Balfour*, Y. Chen Lee†, Helen Liddy‡, Diane Irving‡, Joanna Sheldon‡, Mary P.E. Slack§, Andrew J. Pollard†, and Paul T. Heath*

Author affiliations: *St George's University of London, London, United Kingdom; †University of Oxford, Oxford, United Kingdom; ‡St. George's Hospital, London, United Kingdom; §Health Protection Agency Centre for Infections, London, United Kingdom

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Figure 3

Geometric mean avidity index (GMAI) (95% confidence intervals [CI]) after booster in 2- to 4-year-old children, according to number of doses of acellular pertussis containing Haemophilus influenzae type b combination vaccines received in infancy. Number of participants is shown in parentheses.

Figure 3. Geometric mean avidity index (GMAI) (95% confidence intervals [CI]) after booster in 2- to 4-year-old children, according to number of doses of acellular pertussis containing Haemophilus influenzae type b combination vaccines received in infancy. Number of participants is shown in parentheses.

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