New H1N1 virus mutation found, what it means
June 17, 5:57 AM
A new H1N1 virus (aka swine flu) mutation, a subtype strain named A/Sao Paulo/1454/H1N1, has been isolated in a 26-year-old patient in Brazil. With the new H1N1 mutation comes fear that the current pandemic swine flu virus will spread more rapidly, possibly to new hosts and, yet, it is unknown if such mutation will prove more deadly than the current A(H1N1) pandemic.
The genetic sequence of the new H1N1 virus subtype (A/Sao Paulo/1454/H1N1) was isolated by a virology team lead by Terezinha Maria de Paiva at the Instituto Adolfo Lutz, formerly named Adolf Lutz Bacteriolocial Insitute – the latter an outdated name in use by many news reports -- located in San Palo, Brazil. [This name clarification may be useful when conducting online research on the new influenza A virus.]
Discovered in a patient on Tuesday, the new H1N1 virus mutation includes alterations in the hemagglutinin protein. Hemagglutinin is one of the reasons that the influenza virus is so effective as the protein allows the virus to infect new hosts.
Why is the new H1N1 virus subtype and mutation important?
Every couple of decades, a new strain of influenza appears that is far more infectious, allowing it to spread rapidly -- including that which occurred during the 1918/1919 H1N1 pandemic, or Spanish flu, which killed a roughly estimated 50 million people and infected at least 500 million.
The newly identified H1N1 virus strain -- a mutation from the A(H1N1) swine flu pandemic isolate -- may or may not prove more lethal or infectious, but scientists are concerned and vaccine efforts continue.
Additionally, the Insituto Adolfo Lutz website reveals details on A/Sao Paulo/1454/H1N1 but the related Technical Note is written in Portuguese-Spanish requiring translation for most readers. An excerpt and translation instructions follow.
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