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{{Avian influenza}}
{{Avian influenza}}'''For more information about seasonal human influenza virus that is not associated with animal exposure, see [[Influenza]]'''<br><br>
{{CMG}}; {{AE}} {{YD}}
==Overview==
==Overview==
[[Avian influenza]] was first described by Perroncito in 1878 in northern [[Italy]] following an outbreak of contagious disease of [[poultry]]. In 1918, the avian-descended influenza A H1N1 caused the first major human influenza pandemic. The first avian influenza A H5N1 virus infection in humans was described in 1997 in [[Hong Kong]], where 18 cases were documented (including 6 deaths). The first human-to-human [[transmission]] of avian influenza infection was described in 2003 during the outbreaks in Southeast and Central Asia.
==Historical Perspective==
==Historical Perspective==
*Avian influenza was first described in  
*[[Avian influenza]] was first described by Perroncito in 1878 in northern Italy following an outbreak of contagious disease of poultry.<ref name="pmid18533261">{{cite journal| author=Lupiani B, Reddy SM| title=The history of avian influenza. | journal=Comp Immunol Microbiol Infect Dis | year= 2009 | volume= 32 | issue= 4 | pages= 311-23 | pmid=18533261 | doi=10.1016/j.cimid.2008.01.004 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=18533261  }} </ref> In 1984 and 1901, subsequent outbreaks were reported in [[Italy]], [[Germany]], [[Austria]], [[Belgium]], and [[France]].<ref name="pmid18533261">{{cite journal| author=Lupiani B, Reddy SM| title=The history of avian influenza. | journal=Comp Immunol Microbiol Infect Dis | year= 2009 | volume= 32 | issue= 4 | pages= 311-23 | pmid=18533261 | doi=10.1016/j.cimid.2008.01.004 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=18533261  }} </ref>  
 
* The first major human influenza (influenza A H1N1) pandemic was reported in 1918. The infleunza was an avian-descended virus that underwent adaptive [[mutations]] of unknown mechanisms.
 
* All viral forms were considered highly pathological avian influenza (HPAI) forms of H7 subtype until mid-1950s. After that, other H subtypes were subsequently isolated. In 1960, a new less virulent "N" subtype of avian influenza was isolated in Germany.<ref name="pmid18533261">{{cite journal| author=Lupiani B, Reddy SM| title=The history of avian influenza. | journal=Comp Immunol Microbiol Infect Dis | year= 2009 | volume= 32 | issue= 4 | pages= 311-23 | pmid=18533261 | doi=10.1016/j.cimid.2008.01.004 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=18533261  }} </ref>
'''OFFLU''' is the '''O'''IE/'''F'''AO Network of Expertise on Avian In'''flu'''enza. "In April 2005, the [[OIE]] and [[FAO]] created and endorsed a joint network of expertise on [[Avian influenza]] for the benefit of Member Countries. The objectives of OFFLU are :
# To exchange scientific data and biological materials (including virus strains) within the network, and to share such information with the wider scientific community.
# To offer technical advice and veterinary expertise to Member Countries to assist in the diagnosis, surveillance and control of avian influenza.
# To collaborate with the WHO influenza network on issues relating to the animal-human interface.
# To highlight avian influenza research needs, promote their development and ensure co-ordination."<ref> [http://www.offlu.net/ OFFLU home page]</ref>
 
In February 2006, "OFFLU launched a campaign for openness when Dr. Ilaria Capua of Italy, chair of the network's Scientific Committee, published sequence data on H5N1 strains from Nigeria and Italy and urged 50 colleagues around the world to share their data. In March, the OFFLU Scientific Committee decided "to put new emphasis on the need for further collection, characterization, and exchange" of avian flu viruses and for expansion of sequence data, the FAO reported. At about the same time, Capua and four OFFLU colleagues wrote a letter to the journal Science promising to make H5N1 samples available for sequencing."<ref> [http://www.cidrap.umn.edu/cidrap/content/influenza/avianflu/news/aug0306sharing.html CIDRAP] article ''Indonesia, FAO, OIE pledge to publish H5N1 data'' published August 3, 2006</ref>
 
==Sources==
<references/>
 
==Further reading==
*[http://www.cdc.gov/ncidod/EID/vol12no08/06-0380.htm CDC] article ''OFFLU Network on Avian Influenza'' detailing OFFLU "achievements and constraints to date and plans for the future".
 
[[Category:Pandemics|*]]
[[Category:Epidemiology]]
[[Category:Influenza]]
[[Category:H5N1]]
[[Category:United Nations specialized agencies]]
 
 
 
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* The first influenza A H5N1 virus infection in humans was described in 1997 in [[Hong Kong]], where 18 cases were documented (including 6 [[death]]s).<ref name="pmid9482437">{{cite journal| author=Yuen KY, Chan PK, Peiris M, Tsang DN, Que TL, Shortridge KF et al.| title=Clinical features and rapid viral diagnosis of human disease associated with avian influenza A H5N1 virus. | journal=Lancet | year= 1998 | volume= 351 | issue= 9101 | pages= 467-71 | pmid=9482437 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=9482437  }} </ref><ref name="pmid11938498">{{cite journal| author=Chan PK| title=Outbreak of avian influenza A(H5N1) virus infection in Hong Kong in 1997. | journal=Clin Infect Dis | year= 2002 | volume= 34 Suppl 2 | issue=  | pages= S58-64 | pmid=11938498 | doi=10.1086/338820 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11938498  }} </ref>
* In 2003, the largest non-H5N1 [[outbreak]] occurred in Netherlands, where 89 cases were documented (including 1 [[death]]). It is hypothesized that during the [[Netherlands]] outbreak, the first [[human-to-human transmissio]]<nowiki/>n may have occurred.<ref name="pmid14987882">{{cite journal| author=Koopmans M, Wilbrink B, Conyn M, Natrop G, van der Nat H, Vennema H et al.| title=Transmission of H7N7 avian influenza A virus to human beings during a large outbreak in commercial poultry farms in the Netherlands. | journal=Lancet | year= 2004 | volume= 363 | issue= 9409 | pages= 587-93 | pmid=14987882 | doi=10.1016/S0140-6736(04)15589-X | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=14987882  }} </ref>
* In 2003, human-to-human transmission of avian influenza was first reported during the influenza A H5N1 outbreaks in Southeast and Central Asia. 
* It has been speculated that following genetic mutations, the avian influenza virus may be evolving into more virulent and fatal forms, with increased rates of severe clinical manifestations.<ref name="pmid16140756">{{cite journal| author=Maines TR, Lu XH, Erb SM, Edwards L, Guarner J, Greer PW et al.| title=Avian influenza (H5N1) viruses isolated from humans in Asia in 2004 exhibit increased virulence in mammals. | journal=J Virol | year= 2005 | volume= 79 | issue= 18 | pages= 11788-800 | pmid=16140756 | doi=10.1128/JVI.79.18.11788-11800.2005 | pmc=PMC1212624 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=16140756  }} </ref><ref name="pmid15681421">{{cite journal| author=Govorkova EA, Rehg JE, Krauss S, Yen HL, Guan Y, Peiris M et al.| title=Lethality to ferrets of H5N1 influenza viruses isolated from humans and poultry in 2004. | journal=J Virol | year= 2005 | volume= 79 | issue= 4 | pages= 2191-8 | pmid=15681421 | doi=10.1128/JVI.79.4.2191-2198.2005 | pmc=PMC546577 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=15681421  }} </ref>


==References==
==References==


{{Reflist|2}}
{{Reflist|2}}
[[Category:Needs content]]
[[Category:Pandemics]]
[[Category:Occupational safety and health]]
[[Category:Influenza]]
[[Category:Bird diseases]]
[[Category:Infectious diseases]]
[[Category:Avian influenza]]
[[Category:Medicine]]
[[Category:Infectious disease]]
[[Category:Virology]]
[[Category:Animal virology]]
[[Category:Microbiology]]
[[Category:Microbiology]]
[[Category:Poultry diseases]]
[[Category:Emergency medicine]]
[[Category:Pulmonology]]
[[Category:Pulmonology]]
[[Category:Disease]]
[[Category:Occupational safety and health]]


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Latest revision as of 20:21, 23 April 2015

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Yazan Daaboul, M.D.

Overview

Avian influenza was first described by Perroncito in 1878 in northern Italy following an outbreak of contagious disease of poultry. In 1918, the avian-descended influenza A H1N1 caused the first major human influenza pandemic. The first avian influenza A H5N1 virus infection in humans was described in 1997 in Hong Kong, where 18 cases were documented (including 6 deaths). The first human-to-human transmission of avian influenza infection was described in 2003 during the outbreaks in Southeast and Central Asia.

Historical Perspective

  • Avian influenza was first described by Perroncito in 1878 in northern Italy following an outbreak of contagious disease of poultry.[1] In 1984 and 1901, subsequent outbreaks were reported in Italy, Germany, Austria, Belgium, and France.[1]
  • The first major human influenza (influenza A H1N1) pandemic was reported in 1918. The infleunza was an avian-descended virus that underwent adaptive mutations of unknown mechanisms.
  • All viral forms were considered highly pathological avian influenza (HPAI) forms of H7 subtype until mid-1950s. After that, other H subtypes were subsequently isolated. In 1960, a new less virulent "N" subtype of avian influenza was isolated in Germany.[1]
  • The first influenza A H5N1 virus infection in humans was described in 1997 in Hong Kong, where 18 cases were documented (including 6 deaths).[2][3]
  • In 2003, the largest non-H5N1 outbreak occurred in Netherlands, where 89 cases were documented (including 1 death). It is hypothesized that during the Netherlands outbreak, the first human-to-human transmission may have occurred.[4]
  • In 2003, human-to-human transmission of avian influenza was first reported during the influenza A H5N1 outbreaks in Southeast and Central Asia.
  • It has been speculated that following genetic mutations, the avian influenza virus may be evolving into more virulent and fatal forms, with increased rates of severe clinical manifestations.[5][6]

References

  1. 1.0 1.1 1.2 Lupiani B, Reddy SM (2009). "The history of avian influenza". Comp Immunol Microbiol Infect Dis. 32 (4): 311–23. doi:10.1016/j.cimid.2008.01.004. PMID 18533261.
  2. Yuen KY, Chan PK, Peiris M, Tsang DN, Que TL, Shortridge KF; et al. (1998). "Clinical features and rapid viral diagnosis of human disease associated with avian influenza A H5N1 virus". Lancet. 351 (9101): 467–71. PMID 9482437.
  3. Chan PK (2002). "Outbreak of avian influenza A(H5N1) virus infection in Hong Kong in 1997". Clin Infect Dis. 34 Suppl 2: S58–64. doi:10.1086/338820. PMID 11938498.
  4. Koopmans M, Wilbrink B, Conyn M, Natrop G, van der Nat H, Vennema H; et al. (2004). "Transmission of H7N7 avian influenza A virus to human beings during a large outbreak in commercial poultry farms in the Netherlands". Lancet. 363 (9409): 587–93. doi:10.1016/S0140-6736(04)15589-X. PMID 14987882.
  5. Maines TR, Lu XH, Erb SM, Edwards L, Guarner J, Greer PW; et al. (2005). "Avian influenza (H5N1) viruses isolated from humans in Asia in 2004 exhibit increased virulence in mammals". J Virol. 79 (18): 11788–800. doi:10.1128/JVI.79.18.11788-11800.2005. PMC 1212624. PMID 16140756.
  6. Govorkova EA, Rehg JE, Krauss S, Yen HL, Guan Y, Peiris M; et al. (2005). "Lethality to ferrets of H5N1 influenza viruses isolated from humans and poultry in 2004". J Virol. 79 (4): 2191–8. doi:10.1128/JVI.79.4.2191-2198.2005. PMC 546577. PMID 15681421.

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