Table 1.

Investigations performed for atypical pneumonia aetiologies.

Investigation	Result
Polymerase chain reaction (PCR)
Chlamydia pneumoniae DNA	Negative
Chlamydia psittaci DNA	Detected
Legionella longbeachae DNA	Negative
Legionella pneumophila DNA	Negative
Mycoplasma pneumoniae PCR	Negative
Serology
Brucella abortus-V	<20
Leptospirosis IgM-V	<1.0
Q fever IgM index-V	<0.9
Q fever ph2 IgG EIA	<0.9
Mycoplasma IgG ind-V	Non-reactive
Mycoplasma IgM ind-V	Non-reactive
C.psittaciimmunofluorescence
Initial titre (hospital day 11)	256
Repeat titre (hospital day 38)	512