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A Highly Pathogenic #Avian #H7N9 #Influenza Virus Isolated from A #Human Is Lethal in Some #Ferrets Infected via #Respiratory #Droplets (Cell Host Microbe, abstract)

Title : A Highly Pathogenic #Avian #H7N9 #Influenza Virus Isolated from A #Human Is Lethal in Some #Ferrets Infected via #Respiratory #Drop...

28 Mar 2017

#Avian #Influenza [#H5N1, #H5N6]–Weekly #Update, No. 577 (24 March 2017) (@WHO WPRO)

 

Title: #Avian #Influenza [#H5N1, #H5N6]–Weekly #Update, No. 577 (24 March 2017).

Subject: Avian Influenza, H5N1 & H5N6 subtypes, human cases in the WHO Western Pacific Region, weekly update.

Source: World Health Organization (WHO), Office for the Western Pacific Region, full page: (LINK).

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Avian Influenza - Weekly Update Number 577 (24 March 2017)

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Human infection with avian influenza A(H5N1) virus

  • Between 17 and 23 March 2017, no new cases of human infection with avian influenza A(H5N1) virus were reported to WHO in the Western Pacific Region.
  • From January 2003 to 16 February 2017, a total of 238 cases of human infection with avian influenza A(H5N1) virus were reported from four countries within the Western Pacific Region (Table 1).
  • The last case was reported on 14 January 2016.
  • Of these cases, 134 were fatal, resulting in a case fatality rate (CFR) of 56%.
  • From January 2003 to 16 February 2017, there were 856 cases of human infection with avian influenza A(H5N1) virus reported from 16 countries worldwide.
  • Of these cases, 452 were fatal, resulting in a CFR of 52.8%.

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Human infection with avian influenza A(H5N6) virus

  • Between 17 and 23 March 2017, no new cases of human infection with avian influenza A(H5N6) virus were reported to WHO in the Western Pacific Region.
  • The last case was reported on 1 December 2016 (source: http://www.who.int/csr/don/07-december-2016-ah5n6-china/en/).
  • A total of 16 laboratory-confirmed cases of human infection with influenza A(H5N6) virus, including six deaths, have been reported to WHO from China since 2014.

 

Public health risk assessment for human infection with avian influenza A(H5) viruses

  • Whenever avian influenza viruses are circulating in poultry, sporadic infections and small clusters of human cases are possible in people exposed to infected poultry or contaminated environments, therefore sporadic human cases would not be unexpected.
  • With the rapid spread and magnitude of avian influenza outbreaks due to existing and new influenza A(H5) viruses in poultry in areas that have not experienced this disease in animals recently, there is a need for increased vigilance in the animal and public health sectors.
  • Community awareness of the potential dangers for human health is essential to prevent infection in humans.
  • Surveillance should be enhanced to detect human infections if they occur and to detect early changes in transmissibility and infectivity of the viruses.
  • For more information on confirmed cases of human infection with avian influenza A(H5) virus reported to WHO, visit: http://www.who.int/influenza/human_animal_interface/en/

 

Related links

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Keywords: WHO; Updates; Asian Region; Avian Influenza; H5N1; H5N6; Human.

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