Popular bird flu topics >

What is H5N1 virus?

H5N1 - also called "Influenza A (H5N1) virus" – is an influenza A virus subtype that occurs mainly in birds, is highly contagious among birds, and can be deadly to them. H5N1 virus does not usually infect people, but infections with these viruses have occurred in humans. Most of these cases have resulted from people having direct or close contact with H5N1-infected poultry or H5N1-contaminated surfaces.

Of the few avian influenza viruses that have crossed the species barrier to infect humans, the H5N1 virus has caused the greatest number of detected cases of severe disease and death in humans.

However, it is quite possible that those cases in the most severely ill people are more likely to be diagnosed and reported, while milder cases go unreported.

For the most current information about avian influenza and cumulative case numbers, see the World Health Organization (WHO) avian influenza website.

Of the human cases associated with the ongoing H5N1 virus outbreaks in poultry and wild birds in Asia and parts of Europe, the Near East and Africa, more than half of those people reported infected with the virus did not survive.

Most cases have occurred in previously healthy children and young adults and have resulted from direct or close contact with H5N1-infected poultry or H5N1-contaminated surfaces.

In general, H5N1 remains a very rare disease in people. The H5N1 virus does not infect humans easily, and if a person is infected, it is currently very difficult for the virus to spread to another person.

While there has been some human-to-human spread of the H5N1 virus it has been limited, inefficient and unsustained. For example, in 2004 in Thailand, probable human-to-human spread in a family resulting from prolonged and close contact between an ill child and her mother was reported.

Most recently, in June 2006, WHO reported evidence of human-to-human spread in Indonesia. In this situation, 8 people in one family were infected. The first family member is thought to have become ill through contact with infected poultry.

This person then infected 6 family members. One of those 6 people (a child) then infected another family member (his father). No further spread outside of the exposed family was documented or suspected.

Nonetheless, because all influenza viruses have the ability to change, scientists are concerned that H5N1 virus one day could be able to infect humans and then spread easily from one person to another.

Because these viruses do not commonly infect humans, there is little or no immune protection against them in the human population. If H5N1 virus were to gain the capacity to spread easily from person to person, an influenza pandemic (worldwide outbreak of disease) could begin which would likely result in a very high death toll.

No one can predict when a pandemic might occur. However, experts from around the world are watching the H5N1 situation in Asia and Europe very closely and are preparing for the possibility that the virus may begin to spread more easily from person to person.

Bookmark and Share




h5n1 virus - Google News
This RSS feed URL is deprecated Sun, 18 Feb 2018 22:14:09 GMTThis RSS feed URL is deprecated, please update. New URLs can be found in the footers at https://news.google.com/news
China confirms world's first human case of H7N4 bird flu during major travelling season - Daily Mail Thu, 15 Feb 2018 10:23:18 GMT

Daily Mail

China confirms world's first human case of H7N4 bird flu during major travelling season
Daily Mail
The world's first human cases of bird flu were reported in Hong Kong in 1997, when six people were killed by the H5N1 strain of the virus. Hundreds more have died worldwide in subsequent outbreaks, especially of highly-virulent strains like H7N9. Cases ...
China confirms first ever human case of H7N4 bird fluThe Guardian
Bird flu H7N4 outbreak: Four symptoms to watch for after first ever human case confirmedExpress.co.uk
China confirms first human case of H7N4 bird fluNew Straits Times Online
NPR -GovHK
all 27 news articles »
First Human 'Bird Flu' Case Confirmed in China - PrecisionVaccinations (press release) Sat, 17 Feb 2018 22:57:16 GMT

PrecisionVaccinations (press release)

First Human 'Bird Flu' Case Confirmed in China
PrecisionVaccinations (press release)
February 17th, 2018 The world's first human case of 'bird-flu' has been confirmed in China. The National Health and Family Planning Commission (NHFPC) confirmed the first human case of avian influenza A (H7N4) ever reported was confirmed in Changzhou ...

Mutations in the PA Protein of Avian H5N1 Influenza Viruses Affect Polymerase Activity and Mouse Virulence - Journal of Virology Tue, 30 Jan 2018 16:27:49 GMT

Mutations in the PA Protein of Avian H5N1 Influenza Viruses Affect Polymerase Activity and Mouse Virulence
Journal of Virology
To study the influenza virus determinants of pathogenicity, we characterized two highly pathogenic avian H5N1 influenza viruses isolated in Vietnam in 2012 (A/duck/Vietnam/QT1480/2012 [QT1480]) and 2013 (A/duck/Vietnam/QT1728/2013 [QT1728]) and found ...

Odisha: Poultry owners asked to remain alert over bird flu in Paradip ... - The New Indian Express Sun, 18 Feb 2018 01:14:08 GMT

The New Indian Express

Odisha: Poultry owners asked to remain alert over bird flu in Paradip ...
The New Indian Express
PARADIP: Panic gripped Paradip, Kujang and Erasama areas on Saturday after the mass death of crows was found to have been caused by avian influenza. The officials of Health and Animal Husbandry issued an alert in the rural areas and asked the poultry ...

and more »
Here's why it's so hard to make a better flu vaccine - NBCNews.com Wed, 14 Feb 2018 20:58:43 GMT

NBCNews.com

Here's why it's so hard to make a better flu vaccine
NBCNews.com
From H5N1 to H7N9, the viruses that threaten to cause havoc are bird flu viruses. The H1N1 virus that caused the 1918 pandemic originated in birds. A prototype for a universal flu vaccine. The nanoparticle is a hybrid of a protein scaffold (blue) and ...
Weekly U.S. Influenza Surveillance Report | Seasonal Influenza (Flu) | CDCCDC

all 642 news articles »
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 ...

High-path H9N2 infects Ghana poultry, raising concern - CIDRAP Thu, 15 Feb 2018 21:11:15 GMT

CIDRAP

High-path H9N2 infects Ghana poultry, raising concern
CIDRAP
Elsewhere, outbreaks involving other avian flu strains were detected in other countries, according to separate reports from the OIE. Cambodia, which has been reporting a small but steady stream of H5N1 outbreaks since the middle of December, reported ...

We need a universal flu vaccine before the next pandemic strikes ... - Salon Fri, 16 Feb 2018 00:35:50 GMT

Salon

We need a universal flu vaccine before the next pandemic strikes ...
Salon
This year the world will mark the 100th anniversary of one of the most devastating infectious disease events in recorded history: the 1918 influenza pandemic, which caused an estimated 50 million to 100 million deaths worldwide. There were several ...

and more »
Can I get flu from my dog? - Health24 Wed, 24 Jan 2018 05:40:42 GMT

New Atlas

Can I get flu from my dog?
Health24
But can you contract the flu virus from your cat or dog? Cats and dogs can suffer from colds and flu just like humans; they experience sneezing, fatigue and a discharge from the nose and eyes. According to the Berkeley Wellness Center, you cannot get ...
Shielding against pandemic flu dangersScience Daily
Universal Vaccines Are the Future of MedicineFuturism
Universal flu vaccine targets backbone of the virusNew Atlas
RT -Technology Networks -Gephardt Daily -CDC
all 879 news articles »
Bird flu could be worse than AIDS, says WHO - The Southern Times Thu, 15 Feb 2018 05:42:15 GMT

Bird flu could be worse than AIDS, says WHO
The Southern Times
Most Southern African governments are already preoccupied with reducing the impact of HIV and AIDS, declared a national disaster in most countries, on their economies, and they appear ill-prepared for a major outbreak of the lethal H5N1 strain of the ...

Bookmark and Share