Undirflokkur inflúensu A H1N1
H1N1 er undirflokkur af inflúensu A og algengasta orsök inflúensu í fólki. Sum afbrigði af H1N1 sýkja menn svo sem afbrigðið sem olli spænsku veikinni árið 1918. Önnur afbrigði af H1N1 eru svínaflensa og fuglaflensa. Inflúensufaraldurinn árið 1918 dró 50-100 milljónir manns til dauða frá 1918-1919.

Í mars og apríl 2009 braust út svínaflensufaraldur í Mexíkó.

Tenglar 

 Why Revive a Deadly Flu Virus? By Jamie Shreeve - January 2006 New York Times - Six-page human-interest story on the recreation of the deadly 1918 H1N1 flu virus
 BBC News - 1918 flu virus's secrets revealed Results from analyzing a recreated strain.
 Publicly available data
 Oral history by 1918 pandemic survivor
 Recent influenza A (H1N1) infections of pigs and turkeys in northern Europe
 Epidemiologic Notes and Reports Influenza A(H1N1) Associated With Mild Illness in a Nursing Home -- Maine
 Swine Influenza Vaccine, H1N1 & H3N2, Killed Virus 
 Influenza Virus Infections of Pigs 
 H1N1-influenza as Lazarus: Genomic resurrection from the tomb of an unknown

 BioHealthBase Bioinformatics Resource Center Database of influenza genomic sequences and related information.
 Outbreak Alerts United States based communicable disease notification website.

Veirur