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Avian Influenza Archive from Mar 06, 2015

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News Update March 4, 2015

WHO statement
In a statement released on February 26, the World Organisation for Animal Health (WHO) warned that currently avian influenza strains are co-circulating and swapping genetic material at an unprecedented level.  This amount of diversity and spread could create novel strains, threaten livelihoods, the food supply, and even human health.  The agency added that it is most concerned about the H5 and H7 strains because they can change rapidly and cause serious illness in poultry.  H9N2 also needs to be closely watched, as it had provided ?donor? genes to H5N1 and H7N2 strains and resulted in human infections in China and Egypt.  Though little is known about a new H5N6 strain, it has caused three human infections in China, two of which were fatal.  The WHO said the emergence of so many novel viruses has created a diverse gene pool, which could have unpredictable and potentially dangerous consequences for animal and human health.

CDC
According to a statement by the Centers for Disease Control and Prevention (CDC), the highly pathogenic H5 avian influenza viruses circulating in the US poses a low risk to human health at this time.  The H5 strain was first detected in wild birds in Washington state, and additional infections in wild birds with highly pathogenic H5N2, H5N8, and H5N1 have been reported in Colorado, Idaho, Oregon, Nevada, Washington, Utah, and as of this week, Minnesota.  While no human infections of these strains have been reported, similar viruses like Asian-origin H5N1 have infected people in the past.

Avian Influenza in Wild Birds (and captive gyrfalcons)
USA (HPAI H5N8)
According to a World Organisation of Animal Health Report, additional cases of the highly pathogenic H5N8 avian influenza virus in wild birds have been reported in the states of Washington, Oregon, California, Utah, Idaho, and Nevada.  The cases included 2 captive gyrfalcons, a peregrine falcon, a bald eagle, and several hunter-harvested ducks, including: 4 American wigeon, a gadwall, an American green-winged teal, and 2 mallards. The USDA Animal and Plant Health Inspection Service is continuing to conduct an epidemiological investigation and enhanced surveillance.  To date, all enhanced surveillance and testing for avian influenza around affected premises has been negative for avian influenza.
 
Avian Influenza in Poultry
Germany (LPAI H7N7)
An outbreak of low pathogenic H7N7 avian influenza has been reported at a turkey farm in Langen, in the Cuxhaven District of Niedersachsen.  100 birds died, and the other 23,400 were destroyed to prevent the virus from spreading.  In addition, no poultry or poultry meat has been moved from the farm and the area has been thoroughly disinfected.

Taiwan (HPAI H5)
The Council of Agriculture (COA) has placed a new regulation making it mandatory for poultry to be raised in enclosed spaces, in an effort to prevent contact with wild birds and stop the spread of avian influenza.  It is estimated that 4.2 million domestic poultry have been culled on 853 farms since the current outbreaks started.  Poultry farmers will be given six months (until September) to comply with the new regulation, after which violators will be subject to fines.  This mandate is in addition to current restrictions on the movement of birds on infected farms and disinfection requirements after culling.  The COA is also considering revising the poultry farm registration system to require the registration of poultry farms that have 500 birds or more, instead of the current 3,000.

South Africa (LPAI H5N2)

Additional cases of low pathogenic H5N2 avian influenza virus in three commercial ostrich farms in Oudtshoorn, Western Cape Province were reported to the World Organisation for Animal Health.  Of the 2,715 birds housed on the farms, 767 died.  The source of the outbreak is unknown.  To prevent further spread of the virus, the animals have been quarantined and movement restrictions inside the country have been put in place.

South Korea (HPAI H5N8)
According to a World Organisation for Animal Health Report, between last September and the end of January this year, there have been 65 outbreaks, which included 22 stand-alone and 43 clusters. Only177 birds died from the highly pathogenic H5N8 avian influenza virus, but over 2,500,000 were destroyed.  The destroyed birds included chickens, ducks, geese, and doves. The source of the outbreak is unknown, and authorities are still implementing epidemiological surveys.  In addition to culling, other control measures include quarantine and disinfection of infected farms, control of wildlife reservoirs, and movement restrictions inside the country.

Avian Influenza in Humans
China (LPAI H7N9)
The Centre for Health Protection (CHP) of the Department of Health has reported three additional human cases of low pathogenic H7N9 avian influenza.  The patients include a 36-year-old woman from Guangdong Province, and two men aged 50 and 68 from Anhui Province. All three had contact with poultry and are currently in critical condition.  To date, 596 human cases of H7N9 have been reported by health authorities, with 179 cases in Guangdong alone.  To prevent the virus from spreading, health surveillance measures, such as thermal imaging systems, are in place for body temperature checks on inbound travelers.  CHP urges people to avoid contact with live poultry and their droppings.

Egypt (HPAI H5N1)
According to the health ministry, a 16-year-old-girl in Shargiya governorate and a 33-year-old woman in Cairo have died from the highly pathogenic H5N1 avian influenza virus.  A two-year-old girl from Beheira governorate was cured of the disease.  This brings the total number of deaths from H5N1 this year to ten, and 11 cases are currently under treatment.  Most cases have occurred in rural areas where villagers tend to raise poultry in their homes.



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