Fig. 2From: The influence of Streptococcus pneumoniae nasopharyngeal colonization on the clinical outcome of the respiratory tract infections in preschool childrenUse of antimicrobials based on Streptococcus pneumoniae serotype/serogroup. Only serotypes with at least 10 cases are displayed. Antimicrobial use (used vs not used) for each serotype/serogroup compared with SPn-negative group (chi-squared test). 15–serogroup 15. 23–non-23F serotypesBack to article page