Risk factors and outcomes of influenza A (H3N2) pneumonia in an area where avian influenza (H5N1) is endemic.
We conducted a cohort study to identify the risks and outcomes of influenza A (H3N2) pneumonia. Of the 145 patients studied, 10 (7%) had influenza A pneumonia. Logistic regression identified multiple comorbidities (P<.001) and diarrhea at the initial presentation (P=.001) as associated risks. Infection with influenza A (P=.01) and receipt of inadequate antimicrobial therapy (P=.005) were predictors of mortality.
Apisarnthanarak
Anucha
A
Division of Infectious Diseases, Deptartment of Medicine, Thammasart University Hospital, Pratumthani, Thailand. anapisarn@yahoo.com
Puthavathana
Pilaipan
P
Mundy
Linda M
LM
D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D015331:Cohort Studies; D017714:Community-Acquired Infections / Q000382:microbiology / Q000401:mortality / Q000821:virology*; D003967:Diarrhea; D019353:Endemic Diseases / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D053122:Influenza A Virus, H3N2 Subtype / Q000472:pathogenicity*; D053124:Influenza A Virus, H5N1 Subtype; D007251:Influenza, Human / Q000382:microbiology / Q000401:mortality*; D008297:Male; D008875:Middle Aged; D009026:Mortality; D011024:Pneumonia, Viral / Q000382:microbiology / Q000401:mortality*; D012307:Risk Factors; D013785:Thailand / Q000453:epidemiology