Carriage of penicillin resistant pneumococci.
Conde-Glez
C J
CJ
D002353:Carrier State / Q000382:microbiology*; D006801:Humans; D010403:Penicillin Resistance; D011008:Pneumococcal Infections / Q000382:microbiology*; D013296:Streptococcus pneumoniae / Q000187:drug effects*