Who guidelines for pharmacological management of pandemic. Media in category h1n1 influenza the following 39 files are in this category, out of 39 total. During the spring of 2009, a novel influenza a h1n1 virus of. Table 1 shows a summary of influenza virus detections in the who. Emergence of a novel swineorigin influenza a h1n1 virus in humans. The h1n1 virus that caused that pandemic is now a regular human flu virus and continues to circulate seasonally worldwide. For this reason, they are described as h1n1, h1n2 etc. Considering the susceptibility of pigs to human and avian influenza viruses, and the virus ability. Outbreak of swineorigin influenza ah1n1 virus infectionmexico, marchapril 2009. Pdf in the spring of 2009, a new human influenza a h1n1 virus emerged in. Pdf influenza is a highly contagious acute viral infection of the respiratory tract.
Influenza a h1n1 pandemic strain evolution divergence. The 2009 swine flu pandemic was an influenza pandemic that lasted from january 2009 to august 2010, and the second of the two pandemics involving h1n1 influenza virus the first being the 19181920 spanish flu pandemic, albeit a new strain. Recommended composition of influenza virus vaccines for. Type a is capable of circulating within many different biological reservoirs. Because this virus is very different from current seasonal influenza viruses, many people will not have protective immunity against it and the seasonal flu. These circumstances prompted us to implement a screening. Influenza is a highly contagious acute viral infection of the respiratory tract. H1n1 is a pandemic caused by a new variant of the influenza a virus that has suffered. After the emergence of pandemic h1n1 2009 virus, measures for its control were taken quickly e. Though the 2009 flu pandemic primarily affected children and young and middleaged adults, the impact of the h1n1 pdm09 virus on the global population during the first year was less severe than that of previous pandemics. Influenza humana a h1n1, su profilaxis y tratamiento. Influenza virus h1 n1 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. For detailed information about flu treatment and prevention for individuals and families, please click here. Screening for pandemic h1n1 2009 virus among hospital.
One population group frequently exposed to this virus is health care staff. Influenza a virus causes influenza in birds and some mammals, and is the only species of the genus alphainfluenzavirus of the virus family orthomyxoviridae. For current, updated information on seasonal flu, including information about h1n1, see the cdc seasonal flu website. Influenza, commonly known as the flu, is an infectious disease caused by an influenza virus. These symptoms typically begin two days after exposure to the virus and most last less than a week. Clinical aspects of pandemic 2009 influenza a h1n1 virus infection. Click here to download the 11 x 17 pdf file so that you can print and post it in your school, business, workplace, or residential setting. It is an orthomyxovirus that contains the glycoproteins haemagglutinin and neuraminidase. There is, i think, no confirmation that this swine flu in september was the same as the current virus. Influenza porcina influenza h1n1 sintomas y causas. Influenza a h1n1 pandemic strain evolution divergence and the potential for antigenic drift variants. Chapitre 7 grippe infection par le virus influenza. Trivalent vaccines include two subtypes of influenza a viruses an a h1n1 pdm09 virus and an ah3n2 virus and one type b virus. The first influenza virus to be recognized in pigs was an h1n1 virus known as the classical swine influenza virus.
First described in april 2009, the virus appeared to be a new strain of h1n1, which resulted from a previous triple reassortment of bird, swine, and. Pb2, classical north american swine h1n1triple reassortant swine. Casos influenza a h1n1 6,331 66 6,905 4,401 3,051 defunciones influenza 345 60 1,112 85 6 20152016 20162017 casos influenza 7,317 2,945 9,1 9,641 6,371. Click here to download the 11 x 17 pdf file so that you can print and post it in your school. Influenza is caused by influenza viruses, members of the orthomyxoviridae family. Estimates of pandemic influenza mortality ranged from 0. Strains of all subtypes of influenza a virus have been isolated from wild birds, although disease is uncommon. This virus rapidly spread around the globe causing significant morbidity and mortality in 20092010.