H174

H174 is a designation that can refer to several different entities, most notably a specific strain of the influenza A virus. This strain, Influenza A(H1N1)pdm09, caused a global pandemic in 2009. The virus is characterized by its hemagglutinin (H) subtype 1 and neuraminidase (N) subtype 1. Genetic analysis of the 2009 H1N1 pandemic virus revealed it was a novel reassortant virus, containing genes from swine, avian, and human influenza viruses. While often referred to as the "swine flu," this name is misleading as it is not solely derived from pigs.

Beyond virology, H174 can also appear as a catalog number or identifier in various scientific and technical contexts. For instance, it might designate a particular chemical compound, a specific piece of laboratory equipment, or a component within a larger system. Without further context, it is difficult to pinpoint the exact meaning. The specific application of H174 would determine its precise characteristics and significance.