avianinfluenza.org

What is Avian influenza (Bird Flu)?

Updated: Tuesday, September 21, 2021 7:38 AM EDT
Avian influenza Articles
Preparing for Human, H5N1 bird flu outbreak
Bird flu symptoms
Can you catch Bird Flu , Avian Influenza from eating poultry?
Confirmed human H5N1 bird flu cases
The origins of Bird Flu
Your cat and Bird flu , avian influenza
Potential bird flu treatment discovery
Bird flu , Avian influenza, new Spanish flu of 1918?
Bird Flu scare and the US bird Embargo
Bird flu , Avian Influenza a non-technical view
Bird flu , Avian flu outbreaks (human to human) in North America
Bird flu , Avian Influenza virus in Smuggled Thai Eagles
Bird flu , Avian Influenza Mutation H5N1 Virus
H5N1 Bird flu , Avian Influenza human vaccine developments
Bird flu , Avian influenza, fact or fiction?
Economic and Social Impacts of Bird Flu , Avian Influenza
Preparing For Pandemic Influenza
Bird Flu , Avian Influenza FAQ
Trial of Experimental Bird Flu , Avian Influenza Vaccine
Bird flu , Avian Influenza infection in Humans
Bird Flu , Avian Influenza explained

Bird Flu Map Links
USGS Interactive Bird flu map
Whooper Swan Tracking Map
Bird flu - US Government

What is Avian influenza (Bird Flu)?

Avian Influenza is an infection caused by Avian (bird) Influenza (flu) Viruses. These viruses occur naturally in birds. Wild birds of all types carry this these viruses in their intestines, but in most cases never get sick from them. However, the viruses these birds carry are highly contagious among other birds and can make domesticated birds, including but not limited to, ducks, turkeys, chickens and geese, very sick and eventually kill them.

Can Avian Influenza Viruses infect humans?

Avian Influenza viruses do not normally infect humans, however serveral cases have been reported since 1997.

What is the difference between Avian Influenza viruses and human flu viruses?

   There are many subtypes of type A influenza viruses. These subtypes differ because of certain proteins on the surface of the influenza A virus (hemagglutinin [HA] and neuraminidase [NA] proteins). There are 16 different subtypes of the HA variety and 9 subtypes of the NA variety, of flu A viruses.

   Many combinations of HA and NA proteins are possible. Each combination is a different subtype. All known subtypes of flu A viruses can be found in birds. However, when we talk about Bird Flu viruses, we are referring to influenza A subtypes chiefly found in birds. They do not usually infect humans, even though we know they can. When we talk about "human flu viruses" we are referring to the subtypes that are most widely found in humans.

   To date we only know about three subtype A human flu viruses (H1N1, H1N2, and H3N2); it is likely that some genetic parts of current human influenza A viruses came from birds originally. Influenza A viruses are constantly changing, and they might adapt over time to infect and spread among humans.

How does Avian Influenza spread?

Infected birds shed flu virus in their saliva, nasal secretions, and feces. Susceptible birds become infected when they have contact with contaminated excretions or surfaces that are contaminated with excretions.

   It is believed that most cases of bird flu infection in humans have resulted from contact with infected poultry or contaminated surfaces. The spread of avian influenza viruses from one ill person to another has been reported very rarely, and transmission has not been observed to continue beyond one person.

How is bird flu in humans treated?

Studies done in laboratories suggest that the prescription medicines approved for human flu viruses should work in preventing Avian Influenza infection in humans. However, flu viruses can become resistant to these drugs, so these medications may not always work. Additional studies are needed to prove the effectiveness of these medicines.

What is the risk to humans from Avian Influenza?

The risk from Avian Influenza is generally low to most people because the viruses occur mainly among birds and do not usually infect humans. However, during an outbreak of Avian Influenza among poultry (domesticated chicken, ducks, turkeys), there is a possible risk to people who have contact with infected birds or surfaces that have been contaminated with excretions from infected birds. The current outbreak of avian influenza A (H5N1) among poultry in Asia and Europe (see below) is an example of an avian influenza outbreak that has caused human infections and deaths. In such situations, people should avoid contact with infected birds or contaminated surfaces, and should be careful when handling and cooking poultry. In rare instances, limited human-to-human spread of H5N1 virus has occurred, and transmission has not been observed to continue beyond one person.

What is an avian influenza A (H5N1) virus?

Influenza A (H5N1) virus – also called “H5N1 virus” – is an influenza A virus subtype that occurs mainly in birds. It was first isolated from birds (terns) in South Africa in 1961. Like all bird flu viruses, H5N1 virus circulates among birds worldwide, is very contagious among birds, and can be deadly.

How is infection with H5N1 virus in humans treated?

The H5N1 virus currently infecting birds in Asia that has caused human illness and death is resistant to amantadine and rimantadine, two antiviral medications commonly used for influenza. Two other antiviral medications, oseltamavir and zanamavir, would probably work to treat flu caused by the H5N1 virus, but additional studies still need to be done to prove their effectiveness.

Is there a vaccine to protect humans from H5N1 virus?

There currently is no commercially available vaccine to protect humans against the H5N1 virus that is being seen in Asia and Europe . However, vaccine development efforts are taking place. Research studies to test a vaccine to protect humans against H5N1 virus began in April 2005, and a series of clinical trials is underway.

What is the risk to people in the United States from the H5N1 avian influenza outbreak in Asia and Europe ?

The current risk to Americans from the H5N1 avian influenza outbreak in Asia is low. The strain of H5N1 virus found in Asia and Europe has not been found in the United States . There have been no human cases of H5N1 flu in the United States . It is possible that travelers returning from affected countries in Asia could be infected if they were exposed to the virus. Since February 2004, medical and public health personnel have been watching closely to find any such cases.

Netherlands tracks the introduction and spread of the 2020-2021 bird flu outb...
21 Sep 2021 at 1:45am
Netherlands tracks the introduction and spread of the 2020-2021 bird flu outb...
21 Sep 2021 at 1:45am
Investigation launched as auk crisis worsens - BirdGuides
21 Sep 2021 at 1:06am
Investigation launched as auk crisis worsens - BirdGuides
21 Sep 2021 at 1:06am
UK free from bird flu but producers urged to stay vigilant - Poultry World
20 Sep 2021 at 3:00am
UK free from bird flu but producers urged to stay vigilant - Poultry World
20 Sep 2021 at 3:00am
Thousands of seabirds found dead in northeast England and Scotland - WION
18 Sep 2021 at 11:51pm
Thousands of seabirds found dead in northeast England and Scotland - WION
18 Sep 2021 at 11:51pm
Minister: Vaccine policy soon to control avian influenza - Dhaka Tribune
18 Sep 2021 at 10:01am
Minister: Vaccine policy soon to control avian influenza - Dhaka Tribune
18 Sep 2021 at 10:01am
Global Egg Powder Market Thrives as Frequency of Avian Flu Increases, Says Fa...
17 Sep 2021 at 4:50am
Global Egg Powder Market Thrives as Frequency of Avian Flu Increases, Says Fa...
17 Sep 2021 at 4:50am
France facing highly contagious virus as flu spreads across Europe - warning ...
16 Sep 2021 at 3:28am
France facing highly contagious virus as flu spreads across Europe - warning ...
16 Sep 2021 at 3:28am
With flu vaccine negotiations, Commission eyes next pandemic - POLITICO.eu
16 Sep 2021 at 12:00am
With flu vaccine negotiations, Commission eyes next pandemic - POLITICO.eu
16 Sep 2021 at 12:00am
UK officially free from bird flu - News - FG Insight
14 Sep 2021 at 9:30pm
UK officially free from bird flu - News - FG Insight
14 Sep 2021 at 9:30pm
Red alert over bird flu outbreak - Guardian
12 Sep 2021 at 12:00am
Red alert over bird flu outbreak - Guardian
12 Sep 2021 at 12:00am
Swine Flu Cases Confirmed in Iowa - PrecisionVaccinations
10 Sep 2021 at 12:00am
Swine Flu Cases Confirmed in Iowa - PrecisionVaccinations
10 Sep 2021 at 12:00am
France sees bird flu outbreak as virus spreads again in Europe - Reuters
10 Sep 2021 at 12:00am
France sees bird flu outbreak as virus spreads again in Europe - Reuters
10 Sep 2021 at 12:00am
Bird flu detected in Luxembourg poultry breeding operation - The Poultry Site
7 Sep 2021 at 12:00am
Bird flu detected in Luxembourg poultry breeding operation - The Poultry Site
7 Sep 2021 at 12:00am
Rising TB and bird flu outbreaks overshadow 2020 animal health report - Irish...
4 Sep 2021 at 12:00am
Rising TB and bird flu outbreaks overshadow 2020 animal health report - Irish...
4 Sep 2021 at 12:00am
UK declared free of bird flu - Outbreak News Today - Outbreak News Today
3 Sep 2021 at 12:00am
UK declared free of bird flu - Outbreak News Today - Outbreak News Today
3 Sep 2021 at 12:00am
Suspected bird flu outbreak identified in Botswana - The Poultry Site
1 Sep 2021 at 12:00am
Suspected bird flu outbreak identified in Botswana - The Poultry Site
1 Sep 2021 at 12:00am
Bird flu outbreak may affect availability of produce at Yuletide ? Poultry fa...
1 Sep 2021 at 12:00am
Bird flu outbreak may affect availability of produce at Yuletide ? Poultry fa...
1 Sep 2021 at 12:00am
Nigeria: H5N1 bird flu outbreak confirmed in Delta state,164,473 birds affect...
28 Aug 2021 at 12:00am
Nigeria: H5N1 bird flu outbreak confirmed in Delta state,164,473 birds affect...
28 Aug 2021 at 12:00am
Weekly poultry digest: bird flu outbreaks in West Africa and labor crunch in ...
27 Aug 2021 at 12:00am
Weekly poultry digest: bird flu outbreaks in West Africa and labor crunch in ...
27 Aug 2021 at 12:00am
Benin confirms H5N1 avian flu outbreak - Al Jazeera English
25 Aug 2021 at 12:00am
Benin confirms H5N1 avian flu outbreak - Al Jazeera English
25 Aug 2021 at 12:00am