Friday, April 17, 2015 New Outbreaks of High-path Avian Flu in Minnesota, Wisconsin, South Dakota
US - Two new outbreaks of highly pathogenic avian influenza of the H5N2 variant were confirmed on turkey farms on 16 April (as well as one outbreak in a backyard flock) following four on the previous day.ThePoultrySite News Desk H5N1 Flu Virus Detected in Wild Duck in Washington State
US - During routine surveillance, an American wigeon (Anas americana; Anatidae) in Whatcom county of Washington state tested positive for the H5N1 subtype of the highly pathogenic avian influenza virus on 5 March, reports USDA.OIE Hong Kong Reports H5N6 Flu Virus in Wild Bird
HONG KONG - On 10 April at a construction site in Yuen Long, a peregrin falcon (Falco peregrinus; Falconidae) was found dead. It has tested positive for the H5N6 variant of the highly pathogenic avian influenza virus. Surveillance has been intensified at all poultry farms, poultry markets and pet bird shops in Hong Kong. OIE Bhutan Reports High-Path Bird Flu in Backyard Flock
BHUTAN - A backyard flock of poultry has tested positive for H5N1 highly pathogenic avian influenza.ThePoultrySite News Desk
Thursday, April 16, 2015 USDA Confirms 11 New Outbreaks of Avian Influenza
US - A total of 11 new outbreaks have been confirmed of H5N2 highly pathogenic avian influenza, involving almost 980,000 commercial poultry - mainly turkeys - starting between 5 and 9 April.ThePoultrySite News Desk Outbreak of Avian Flu in Backyard Poultry in Palestine
PALESTINIAN TERRITORY - A backyard flock in the Gaza Strip has been confirmed with highly pathogenic avian influenza of the H5 sub-type.ThePoultrySite News Desk Bird Flu Hits Turkeys, Geese on Two Taiwanese Farms
TAIWAN - Two poultry flocks were confirmed with H5N2 highly pathogenic influenza in Yunlin county during the last week of March.ThePoultrySite News Desk New Development in Monitoring of Avian Influenza
CANADA - A new research project, funded by Genome BC and partners, aims to identify the the source of the H5N2 avian flu virus strain and develop better tools to predict future outbreaks.ThePoultrySite News Desk What's Been the Bird Flu Impact in the US So Far?
US - Loss of exports, rather than supply, will be the most marked effect from the bird flu outbreak to hit the Mississippi flyway, according to Len Steiner and Steve Meyer in their daily CME Livestock Report.ThePoultrySite News Desk
Wednesday, April 15, 2015 Avian Flu Spreads to Iowa
US - The first outbreak of H5N2 highly pathogenic avian influenza has been confirmed in Iowa - in a commercial turkey flock.ThePoultrySite News Desk Human Infection with Avian Influenza A(H7N9) Virus - China - 15 April 2015
CHINA - On 10 April 2015, the National Health and Family Planning Commission (NHFPC) of China notified WHO of 20 additional laboratory-confirmed cases of human infection with avian influenza A (H7N9) virus, including four deaths.WHO Bird Flu Returns to India
Onset dates ranged from 14 February to 21 March 2015. Cases ranged in age from 32 to 80 years with a mean age of 55 years. Of these 20 cases, 15 (75%) were male. The majority (18 cases, 90%) reported exposure to live poultry. One case is a health care worker, who had also poultry exposure. No clusters were reported. Cases were reported from five provinces: Anhui (3), Fujian (2), Guangdong (4), Shandong (1) and Zhejiang (10).
INDIA - An outbreak of H5N1 highly pathogenic avian influenza has been confirmed in the state of Telangana, which is in the south of the country.ThePoultrySite News Desk
Tuesday, April 14, 2015 First Outbreak of High-Path H5N2 Avian Flu in Commercial Chickens, Wisconsin
US - An outbreak of highly pathogenic H5N2 avian influenza has been confirmed in a flock of 200,000 chickens in Jefferson County, Wisconsin. This is the first commercial chicken flock to be hit by the disease and also the first case in the state of Wisconsin.ThePoultrySite News Desk
Monday, April 13, 2015 Bird Flu Quarantine Encompasses 29 Ontario Farms
CANADA - Twenty-nine poultry farms in Ontario are now under quarantine after H5 avian influenza was confirmed on a turkey farm, according to the Canadian Food Inspection Agency.TheStar.com Canada Niger Isolates Suspected Bird Flu Farm
NIGER - Niger has identified a suspected outbreak of H5N1 bird flu on a chicken farm in the southern town of Maradi, near the border with Nigeria, which has confirmed cases of the virus in several northern states.Reuters Vietnamese Village Flock Hit by Avian Flu
VIET NAM - H5N1 highly pathogenic avian influenza has hit a village poultry flock in the south of the country, leading to the death of 900 birds.ThePoultrySite News Desk New Nanotechnology Tool Detects Avian Flu Virus on Farms
CANADA - A simple and effective portable tool to predict avian flu outbreaks on farms has been created by University of Guelph researchers.ThePoultrySite News Desk
Sunday, April 12, 2015 Further Outbreaks of Avian Flu in Minnesota, North Dakota
US - A total of 98,000 turkeys have been affected in the latest outbreaks of highly pathogenic H5N2 avian influenza (HPAI) in commercial flocks, one in Minnesota and one in North Dakota.ThePoultrySite News Desk
Saturday, April 11, 2015 Six New Outbreaks of High-path Bird Flu Confirmed in US
US - A further six outbreaks of H5N2 highly pathogenic avian influenza - four in Minnesota and two in South Dakota - have been confirmed in commercial turkey flocks, affecting 288,000 birds.ThePoultrySite News Desk
Friday, April 10, 2015 Study: H7N9 Adaptation in Mammals May Limit Transmission
GLOBAL - The genetic diversity of H7N9 avian flu viruses that infect ferrets —said to be a good model for human infection — is very limited, which might signify a "genetic bottleneck" to adaptation in mammals, according to a study in 'Nature Communications'. Researchers from St. Jude Children's Research Hospital in the US evaluated the replication efficiency, genetic diversification, and host adaptation of H7N9 virus after they inoculated chickens and ferrets and during ferret-to-ferret transmission. They showed that chickens, a natural H7N9 host, remained asymptomatic and that infection generated high genetic diversity.CIDRAP
(aka bird flu, avian flu) is caused by a type of influenza virus that is hosted by birds, but may infect several species of mammals. It was first identified in Italy in the early 1900s and is now known to exist worldwide. A strain of the H5N1-type of avian influenza virus that emerged in 1997 has been identified as the most likely source of a future influenza pandemic.Strains of avian influenza virus may infect various types of animals, including birds, pigs, horses, seals, whales and humans. However, wild fowl act as natural asymptomatic carriers, spreading it to more susceptible domestic stocks. Avian influenza virus spreads in the air and in manure and there is no evidence that the virus can survive in well cooked meat.How to Recognise Avian Influenza
What to look for
- Ruffled feathers
- Soft-shelled eggs
- Depression and droopiness
- Sudden drop in egg production
- Loss of appetite
- Cyanosis (purplish-blue coloring) of wattles and comb
- Edema and swelling of head, eyelids, comb, wattles, and hocks
- Green diarrhoea
- Blood-tinged discharge from nostrils
- Incoordination, including loss of ability to walk and stand
- Pin-point hemorrhages (most easily seen on the feet and shanks)
- Respiratory distress
- Increased death losses in a flock
- Sudden death
- Nasal discharges
For more detail in avian influenza in poultry click here
Poultry Vaccination as a strategy for controlling AI in commercial birds
Outbreaks of avian influenza in the poultry industry cause devastating economic losses and is generally controlled through extensive culling of infected birds. Alternative strategies also use vaccination as a supplementary control measure during avian influenza outbreaks.
.Advantages of Vaccination
For more information on poultry vaccination see:
- Vaccination reduces susceptibility to infection.
- A higher dose of virus is necessary to infect the vaccinated birds.
- Vaccinated birds shed less virus.
- Decreased contamination of the environment.
- Decreased risk of human infection
- Used strategically vaccination compliments a stamping out strategy by slowing/stopping the spread of the virus
Avian Influenza (Fowl Plague) is a potentially devastating disease, predominantly of chickens and turkeys, although the virus can also affect game birds (pheasants, partridge and quail), ratites (ostrich and emu), psittacine and passerine birds.
Avian Influenza is caused by an orthomyxovirus, or influenza virus and can survive for considerable lengths of time outside of the host and birds are infected through contact with other birds, mechanical vectors such as vehicles and equipment and personnel travelling between farms, markets and abattoirs.
Precautionary requirements include cleaning and disinfection of premises and the establishment of a Biosecurity barrier to help prevent spread of disease is essential.
For more information on biosecurity see the links below