Chlamydial respiratory infections. Don't get bogged down by differentiating species.
Sillis
M
M
Wreghitt
T G
TG
Paul
I D
ID
Caul
E O
EO
D002690:Chlamydia Infections / Q000382:microbiology*; D016993:Chlamydophila pneumoniae / Q000302:isolation & purification; D002691:Chlamydophila psittaci / Q000302:isolation & purification; D006801:Humans; D012141:Respiratory Tract Infections / Q000382:microbiology*