Clasificacion del virus a h1n1 by vanessa silva sosa on prezi. It was called swine flu early on because tests showed that it was like flu viruses that occur in swine pigs. However, recent studies have demonstrated that free chlorine levels recommended by cdc parts per million ppm or mgl for pools. Free chlorine levels typically used in drinking water or recreational water. Department of human services h1n1 resource center nj. The new swine flu virus is actually a genetic mixture of two strains, both found in swine. Pdf swine flu and the current influenza a h1n1 pandemic in. April, the causative virus was confirmed as being influenza a h1n1 of swine origin. Epidemiological factors associated with increased odds for influenza included weeks when.
The majority of cases of influenza a h1n1 2009 were mild and self limiting. H3n2 is increasingly abundant in seasonal influenza, which kills an estimated 36,000 people i. Cdc en espanol medios sociales influenza h1n1 botones. Learning from the 2009 h1n1 influenza pandemic the new rms. For this reason, they are described as h1n1, h1n2 etc. The first outbreak occurred in 2009 and infected people all over the world. H1n1 causing the pandemic was identified in april 2009, after outbreaks of a deadly swine flu1. Influenza a virus subtype h3n2 also h3n2 is a subtype of viruses that cause influenza flu. Olsen cw, brammer l, easterday bc, arden n, belay e. Rodriguez a, alvarezrocha l, sirvent jm, zaragoza r. In the splitdalmatia county sdc, the first influenza case caused by an infection with the pandemic influenza a virus h1n12009 was reported on 3 july, 2009. For infections with influenza a h1n1 virus, a poor prognosis is associated with.
It is an orthomyxovirus that contains the glycoproteins haemagglutinin and neuraminidase. Modern farming systems have a higher potential than traditional farming for pigtopig transmission of virus to occur, because of the confined operation of intensive pig farms, where crowding results in more frequent and prolonged contact with infected swine. Influenzarelated mortality typically occurs a week or two postinfection and is. Influenza a virus subtype h1n1 ah1n1 is the subtype of influenza a virus that was the most common cause of human influenza flu in 2009, and is associated with the 1918 spanish flu outbreak.
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