The incidence of Chlamydia pneumoniae lower respiratory tract infections among university students in northern California.
Chlamydia pneumoniae has recently been identified as a cause of lower respiratory tract infections. From March 1987 to March 1988, 259 university students-151 students with lower respiratory tract infections and 108 controls-from the University of California, Berkeley, were studied to determine the incidence and pattern of C pneumoniae lower respiratory tract infections. Serologic evidence of a recent C pneumoniae infection was found in less than 2%, and the organism was not isolated from any of the subjects. Despite the paucity of evidence of a recent infection, 47.5% of this university population showed serologic evidence of a previous C pneumoniae infection. The lower incidence of C pneumoniae infection in our population, when compared with previous reports, suggests that there may be geographic and temporal differences or fluctuations among populations.
Department of Pediatrics, Stanford University School of Medicine, California.
D K
DK
Katzman
A C
AC
Tipton
I F
IF
Litt
I M
IM
Friedman
R W
RW
Emmons
J
J
Schachter
D000328:Adult; D002140:California / Q000453:epidemiology; D002690:Chlamydia Infections / Q000453:epidemiology* / Q000276:immunology; D016993:Chlamydophila pneumoniae / Q000276:immunology; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D015994:Incidence; D011014:Pneumonia / Q000453:epidemiology* / Q000276:immunology; D011446:Prospective Studies; D013333:Student Health Services