Volume 12, Number 6—June 2006
Research
Haemophilus influenzae Type b Reemergence after Combination Immunization
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.](/eid/images/05-1451-F3.gif)
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.