Outpatient visits have surged to their highest levels since the peak of the 2009 swine flu pandemic, with influenza-related emergency department visits remaining very high across the U.S. Notably, flu ...

Influenza infection is self-limiting in humans, but the virus is notorious for causing substantial mortality and morbidity worldwide. Clinical features of influenza virus infection in humans encompass ...

Complications related to the upper airways, including sinusitis or otitis; Pulmonary complications, including bronchitis, asthma (sometimes with status asthmaticus), and acute exacerbations of chronic ...