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  • infections
  • Complications of influenza may include viral pneumonia, secondary bacterial pneumonia, sinus infections, and worsening of previous health problems such as asthma or heart failure. (wikipedia.org)
  • Until the 2013 outbreak in China, no human infections with H7N9 viruses have ever been reported. (wikipedia.org)
  • glycoprotein
  • Changes in the viral HA glycoprotein (HA190D/225D) shift receptor specificity from avian to human sialic acids, while a change at amino acid 627 of the PB2 protein to a lysine (627K) allows avian influenza viruses to efficiently replicate in mammalian cells, and at the lower temperatures of the human upper respiratory tract. (virology.ws)
  • pigs
  • The main hosts appear to be cattle but this virus has been reported from pigs also. (wikipedia.org)
  • Research in guinea pigs has shown that the aerosol transmission of the virus is enhanced when the air is cold and dry. (wikipedia.org)
  • The researchers did not find that the cold impaired the immune response of the guinea pigs to the virus. (wikipedia.org)
  • however, since late August 1998, H3N2 subtypes have been isolated from pigs. (wikipedia.org)
  • prevalence
  • Influenza-A viruses in ducks in northwestern Minnesota: fine scale spatial and temporal variation in prevalence and subtype diversity. (nih.gov)
  • Subtype diversity varied between years and increased with prevalence into September. (nih.gov)
  • Mallard data collected during both years adequately described the observed temporal and spatial prevalence from the total sample and also adequately represented subtype diversity. (nih.gov)
  • Juvenile mallards also were adequate in describing the temporal and spatial prevalence of AIV as well as subtype diversity. (nih.gov)
  • In the past ten years, H3N2 has tended to dominate in prevalence over H1N1, H1N2, and influenza B. Measured resistance to the standard antiviral drugs amantadine and rimantadine in H3N2 has increased from 1% in 1994 to 12% in 2003 to 91% in 2005. (wikipedia.org)
  • respiratory
  • 3. The recombinant influenza virus of claim 1, wherein the chimeric HA fusion protein comprises the RSV G or F neutralizing domains derived from human respiratory syncytial virus (RSV). (patents.com)
  • Influenza-like illnesses were generally mild, but a fatal case of pneumonia in combination with acute respiratory distress syndrome occurred also. (pnas.org)
  • Clinical evaluation of the isothermal amplification assays for the detection of four common respiratory viruses in children with pneumonia. (amedeo.com)
  • The virus isolated from the respiratory specimen from the case was then submitted to Taiwan CDC for further identification. (blogspot.com)
  • Influenza A (H6N1) virus was isolated from the respiratory specimen collected from the case on May 7. (blogspot.com)
  • Besides testing the respiratory specimen collected from the case for influenza viruses, the NIC also tested the specimen for 23 other common respiratory viruses such as adenovirus, respiratory syncytial virus, coronavirus, enterovirus and rhinovirus and the specimen tested negative for all these viruses. (blogspot.com)
  • In the summer, the coating melts before the virus reaches the respiratory tract. (wikipedia.org)
  • deaths
  • According to American Medical Association (H1N1 news, n.d.), as of November 12, 2009, data from April 2009 through October 17, 2009 indicates that: there is a total of 20 million people became ill with H1N1, 98,000 hospitalized, and 3,900 deaths. (studymode.com)
  • Seasonal variation in deaths due to influenza or pneumonia in 122 U.S. cities, vs. other causes. (wikipedia.org)
  • symptoms
  • These symptoms typically begin two days after exposure to the virus and most last less than a week. (wikipedia.org)
  • Influenza is a mixture of symptoms of common cold and pneumonia, body ache, headache, and fatigue. (wikipedia.org)
  • The symptoms most reliably seen in influenza are shown in the adjacent table. (wikipedia.org)
  • Although we have immunizations against many viral diseases and are adept at treating the symptoms of others, the ability of virus to replicate and mutate allow them almost impossible to stop an ongoing war for centuries. (studymode.com)
  • emergence
  • Evolutionary consequences of host shifts represent a challenge to identify the mechanisms involved in the emergence of influenza A (IA) viruses. (biomedcentral.com)
  • These results highlight that evolutionary consequences of bird host shifts would need to be further studied to understand the ecological and molecular mechanisms involved in the emergence of domestic bird-adapted viruses. (biomedcentral.com)
  • Phylogenetic
  • In a phylogenetic-based taxonomy, the category "RNA virus" includes the category "negative-sense ssRNA virus", which includes the Order "Mononegavirales", and the Family "Orthomyxovirus" (among others). (wikipedia.org)
  • Banks J, Speidel EC, Harris PA, Alexander DJ (2000) Phylogenetic analysis of influenza A viruses of H9 haemagglutinin subtype. (springer.com)