H1N1

Pathology.

1. a subtype of the type A influenza virus, with strains that give rise to seasonal epidemics, or sometimes pandemics, including a strain with swine, avian, and human genes responsible for swine flu.

Word History and Origins

Origin of H1N1¹

First recorded in 1970–75; abbreviation of h(aemagglutinin type)1 and n(euraminidase type) 1

Example Sentences

There are multiple types of flu and you may have heard some of the names like H1N1 swine flu, which caused a pandemic in 2009, or H5N1 which is the current flu killing birds around the world.

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The number of children who died from flu last season was the highest since the H1N1 swine flu pandemic season of 2009-10, according to a recent report published in the CDC’s Morbidity and Mortality Weekly Report.

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In the positive news that came out this week, a team of international researchers found that ferrets exposed to a common seasonal human flu — H1N1 — before being exposed to H5N1, acquire some immunity from the seasonal flu.

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“After all, many people have severe seasonal H1N1 infections each year despite lots of immunity to the virus from previous H1N1 exposures.”

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During the 2009 H1N1 pandemic, for example, early research showed the risk of miscarriage seemed to be elevated among pregnant women who got the vaccine two consecutive years in a row.

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