What is the role of H1N1 (swine) influenza in the etiology of viral pneumonia?

Updated: Mar 24, 2021
  • Author: Zab Mosenifar, MD, FACP, FCCP; Chief Editor: John J Oppenheimer, MD  more...
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Answer

Initially reported as an outbreak in Mexico and subsequently the United States, infection from a novel swine-origin influenza A (H1N1) virus rapidly spread to become a worldwide pandemic in 2009. The World Health Organization declared an end to the pandemic in August 2010.

Virus-associated hemophagocytic syndrome may play an important role in development of multiorgan failure and ensuing death in H1N1 infection. [32]

For more information on H1N1 influenza, see H1N1 Influenza (Swine Flu). Rare causes of viral pneumonia include Epstein-Barr virus and rotavirus.


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