Letter: Haemophilus influenzae in the elderly.
D000368:Aged; D000667:Ampicillin / Q000627:therapeutic use; D004739:England; D005260:Female; D006192:Haemophilus Infections / Q000453:epidemiology*; D006193:Haemophilus influenzae / Q000302:isolation & purification*; D006801:Humans; D008297:Male; D009666:Nose / Q000382:microbiology; D010614:Pharynx / Q000382:microbiology; D013183:Sputum / Q000382:microbiology; D013752:Tetracycline / Q000627:therapeutic use
D000667:Ampicillin; D013752:Tetracycline