Brief report| Volume 41, ISSUE 12, P1284-1286, December 2013

Risk factors for prolonged H1N1 influenza among hospitalized patients

      In our study, 50% of 42 hospitalized patients with 2009 H1N1 pandemic influenza experienced symptoms longer than 1 week. Older age and delay in oseltamivir initiation were associated with prolonged illness. Patients with pneumonia and fever ≥7 days were more likely to have polymerase chain reaction-positive nasopharyngeal swabs beyond 1 week.

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