Apr 02, 2020 swine flu is an infection caused by a virus. Influenza ah1n1pdm09 virus ph1n1 was the causal factor of the recent flu pandemic, which claimed several hundred lives. H1n1 influenza synonyms, h1n1 influenza pronunciation, h1n1 influenza translation, english dictionary definition of h1n1 influenza. Key facts about ah1n1 swine flu how does swine flu spread. The new swine flu virus is actually a genetic mixture of two strains, both found in swine, of unknown origin. Influenza ah1n1 virus h1n1 o gripe porcina pagina 2. Influenza a viruses can also cause sporadic infections or spread worldwide. This strain is often called swine flu by the public media. The pandemic influenza ah1n1 2009 virus is a subtype of influenza a virus which is the most common cause of influenza flu in humans.
Clinical illness follows a short incubation period and presentation ranges from asymptomatic to fulminant, depending on the characteristics of both the virus and the individual host. Jun 11, 2019 the h1n1 pdm09 virus was very different from h1n1 viruses that were circulating at the time of the pandemic. Historia natural influenza ah1n1 by karla martinez castro on. Its called swine flu because in the past, the people who caught it had direct contact with pigs. In virology, the pandemic h1n109 virus is a swine origin influenza a virus subtype h1n1 strain that was responsible for the 2009 swine flu pandemic. It is an orthomyxovirus that contains the glycoproteins haemagglutinin and neuraminidase. Joe bresee, with the cdc influenza division, describes swine flu its signs and symptoms, how its transmitted, medicines to treat it, steps people can take to protect themselves from it, and what people should do if they become ill. The number of confirmed cases of influenza a h1n1 infection is increasing in japan, and it is thought to spread further. Of the 43 influenza b viruses from the united states tested, 38 88. Terapia fisica psicoterapia educacion y control del. The virus is contagious and can spread from human to human.
Influenza ah1n1 tambien conocida como influenza porcina o gripe del cerdo. People do not normally get swine flu, but human infections can and do happen. Looking at the domestic and international cases to date 22 may, 2009, although special attention should be paid for highrisk group, such as those with underlying medical conditions e. That changed several years ago, when a new virus emerged that. H1n1 influenza definition of h1n1 influenza by the free. Pdf national pandemic of influenza ah1n1 preparedness plan was launched aiming to control the 2009 pandemic in oman find, read and cite all the research you need on researchgate. Influenza h1 n1 virus 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 outbreak known as the spanish flu.
Reassortment of strains of influenza a h1n1 of avian, porcine and human origin. For this reason, they are described as h1n1, h1n2 etc. Oms gripe pandemica h1n1 2009 world health organization. Influenza ah1n1 virus h1n1 o gripe porcina pagina 2 enviado por sergio rafael tirado perez. Ah1n1 virus swine flu influenza ah1n1 ah1n1 pandemic. Novel influenza a h1n1 is a new emerging flu virus that first caused illness in mexico in.
Few young people had any existing immunity as detected by antibody response to the h1n1 pdm09 virus, but nearly onethird of people over 60 years old had antibodies against this virus, likely from exposure to an older h1n1 virus earlier in their lives. Influenza is an acute respiratory illness, caused by influenza a, b, and c viruses, that occurs in local outbreaks or seasonal epidemics. Data were displayed in the oms line list and were searchable based on case. For other names, see the nomenclature section below. As described in the who manual on animal influenza diagnosis and. In 2009 a strain of swine flu called h1n1 infected many people around the world. In view of the threat posed by the current outbreak of new influenza. The 2009 flu outbreak in humans, known as swine influenza or h1n1 influenza a, refers to influenza a due to a new h1n1 strain called swineorigin influenza virus a soiv.
As of beginning of 2009, the known swine influenza virus. Bulletin of the whoknowledge about pandemic influenza and compliance with containment measures among australians. The influenza virus leads to respiratory disease that. Influenza viruses are cultured in chick embryo and cell culture mdck. The majority of cases of influenza a h1n1 2009 were mild and self limiting.