[Change in bacterial flora and superinfection].
D000368:Aged; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D001424:Bacterial Infections / Q000209:etiology* / Q000382:microbiology; D004352:Drug Resistance, Microbial; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged
D000900:Anti-Bacterial Agents