Swine infuenza (H1N1) pneumonia: bacterial airway colonization common but fatalities due to bacterial pneumonia remain relatively rare.

摘要

I read with interest Dr. Kapelusznik's et ai., report describing four swine influenza (H1N1) cases with negative rapid influenza diagnostic tests (RIDTs); two purportedly had bacterial community-acquired pneumonia (CAP) which merits comment.On chest X-rays (CXRs) swine influenza (HI Nl) pneumonia usually presents either with no/minimal bibasilar markings or bilateral patchy interstitial infiltrates/unilateral small pleural effusion.The authors state that cases #2 and #4 with swine influenza (H1N1) pneumonia also had bacterial CAP.1 Clinically, S. pyogenes CAP is very unusual, unilateral and accompanied by a large serosan-guineous pleural effusion. Case #2 was presented as S. pyogenes CAP, but the RUL infiltrate was without pleural effusion; extraordinarily unusual for S. pyogenes CAP.