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Novel Influenza H1N1 virions from 2009. This strain caused a pandemic and then later became the predominant circulating seasonal H1N1 virus for years. Photo Source: https://phil.cdc.gov/Details.aspx?pid=11745
A novel influenza virus is one that is significantly different seasonal influenza viruses circulating among people. It may originate in animals and gain the ability to infect humans or it may be a human virus that changes substantially. Novel influenza viruses may be able to spread from person to person and may cause serious human illness and death, and therefore may pose a potential risk of a pandemic. Novel influenza viruses of recent concern include avian influenza A viruses such as the highly pathogenic Asian avian influenza A H5N1 and Asian H7N9. Novel influenza viruses also include variant influenza viruses (e.g., H1N1v, H3N2v, H1N2v), which are swine influenza viruses that have infected humans.
Novel influenza is immediately reportable in Orange County, even if the case has not yet been confirmed but is suspected. To report a case, health care providers/facilities should call OCHCA Epidemiology at 714-834-8180.
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