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Bird flu virus

Avian influenza is an infection caused by avian (bird) influenza (flu) viruses. These bird flu viruses occur naturally among birds. Wild birds worldwide carry the viruses in their intestines, but usually do not get sick from them. However, avian influenza is very contagious among birds and can make some domesticated birds, including chickens, ducks, and turkeys, very sick and kill them.

There are many different subtypes of type A influenza viruses. These subtypes differ because of changes in certain proteins on the surface of the influenza A virus (hemagglutinin [HA] and neuraminidase [NA] proteins). There are 16 known HA subtypes and 9 known NA subtypes of influenza A viruses. Many different combinations of HA and NA proteins are possible. Each combination represents a different subtype. All known subtypes of influenza A viruses can be found in birds.

Usually, "bird flu virus" or “avian influenza virus” refers to influenza A viruses found chiefly in birds, but infections with these viruses can occur in humans. The risk from avian influenza is generally low to most people, because the viruses do not usually infect humans.

However, confirmed cases of human infection from several subtypes of avian influenza infection have been reported since 1997. Most cases of avian influenza infection in humans have resulted from contact with infected poultry (e.g., domesticated chicken, ducks, and turkeys) or surfaces contaminated with secretion/excretions from infected birds. The spread of bird flu viruses from one ill person to another has been reported very rarely, and has been limited, inefficient and unsustained.

“Human influenza virus” usually refers to those subtypes that spread widely among humans. There are only three known A subtypes of influenza viruses (H1N1, H1N2, and H3N2) currently circulating among humans. 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.

During an outbreak of bird flu among poultry, there is a possible risk to people who have contact with infected birds or surfaces that have been contaminated with secretions or excretions from infected birds. It is only if the birf flu virus mutates to become contagious amongst humans that it could spread easily between the populations of the world, and that is the potential global bird flu pandemic that is worrying so many health agencies around the world.

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bird flu virus - Google News
This RSS feed URL is deprecated Sun, 18 Feb 2018 22:16:00 GMTThis RSS feed URL is deprecated, please update. New URLs can be found in the footers at https://news.google.com/news
First Human Case of H7N4 Bird Flu Confirmed in China: What You ... - Newsweek Fri, 16 Feb 2018 15:31:56 GMT

Newsweek

First Human Case of H7N4 Bird Flu Confirmed in China: What You ...
Newsweek
The first human case of H7N4 bird flu has been confirmed in China. The patient, a 68-year-old woman in the Jiangsu province, is in stable condition and health authorities believe she will make a full recovery. According to The Guardian, the patient ...

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World's first human case of H7N4 bird flu identified in China - CNN - CNN Thu, 15 Feb 2018 18:24:15 GMT

CNN

Deadly bird flu virus confirmed as killing Queen's Windsor swans ... - The Sun Fri, 09 Feb 2018 00:13:30 GMT

The Sun

Deadly bird flu virus confirmed as killing Queen's Windsor swans ...
The Sun
The Monarch was said to have been left saddened by the loss of the majestic white birds, living on the Thames in waters around her Berkshire residence.

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China reports world's first human case of H7N4 bird flu virus - ABS-CBN News Wed, 14 Feb 2018 18:12:00 GMT

ABS-CBN News

China reports world's first human case of H7N4 bird flu virus
ABS-CBN News
According to the Chinese Center for Disease Control and Prevention, the genes of the H7N4 virus were found to be of avian origin. A highly pathogenic bird flu virus H7N9 first emerged in China in 2013, having infected 1,564 people as of last October, mainly by contact with live poultry or from tainted environment, according to the World Health Organization. Another deadly bird flu strain, H5N1, was first found to have spread from live poultry to humans in Hong Kong in 1997, killing six of 18 people infected that year.

Chicken sample from Hong Kong vendor positive for bird flu virus, as ... - South China Morning Post Tue, 23 Jan 2018 10:37:35 GMT

South China Morning Post

Chicken sample from Hong Kong vendor positive for bird flu virus, as ...
South China Morning Post
Food safety authority says 'very slim' chance of infection if product properly handled.
China chicken sample tests positive for H5 bird flu virus - The StandardHong Kong Standard (press release)

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Hong Kong on alert after China confirms world's first human case of ... - South China Morning Post Wed, 14 Feb 2018 14:55:04 GMT

South China Morning Post

Hong Kong on alert after China confirms world's first human case of ...
South China Morning Post
Health authorities warn holiday travellers to avoid contact with live poultry as Jiangsu woman tests positive for virulent avian influenza strain.

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Ghana reports severe bird flu on farm: OIE - Reuters Wed, 14 Feb 2018 16:32:35 GMT

Ghana reports severe bird flu on farm: OIE
Reuters
PARIS (Reuters) - Ghana has reported an outbreak of the highly pathogenic H9N2 bird flu virus on a farm in the southwest of the country, the Paris-based World Organisation for Animal Health (OIE) said on Wednesday, citing a report from Ghana's ...

Saudi Arabia temporarily bans poultry imports from India over bird flu - Reuters Thu, 08 Feb 2018 10:01:34 GMT

India.com

Saudi Arabia temporarily bans poultry imports from India over bird flu
Reuters
RIYADH (Reuters) - Saudi Arabia has temporarily banned imports of live birds, hatching eggs and chicks from India after a form of bird flu that is highly lethal for poultry was found in the south Asian country, the Saudi agriculture ministry said on ...
Saudi Arabia Bans Poultry Import From India After Bird Flu ReportsIndia.com

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Flu outbreak prompts health warnings, hospital precautions - New Jersey Herald Sun, 18 Feb 2018 05:09:09 GMT

New Jersey Herald

Flu outbreak prompts health warnings, hospital precautions
New Jersey Herald
Every so often, he added, flu viruses undergo a major "shift" to what is essentially an entirely new virus. Such was the case 100 years ago, when a 1918 influenza pandemic -- the worst in history -- took the lives of between 50 million and 100 million ...

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Bird flu: WARNING as deadly outbreak spreads - how to avoid infection - Express.co.uk Thu, 01 Feb 2018 13:43:33 GMT

Express.co.uk

Bird flu: WARNING as deadly outbreak spreads - how to avoid infection
Express.co.uk
Bird flu symptoms include headaches, sore throats and fever; Signs fo flu are similar to other types of flu; H7N9 virus infected 1,5665 people since March 2013; NHS issues warning for travellers. Bird flu is a deadly infection that's caused by the H5N1 ...

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