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 Tue, 24 Apr 2018 14:38:43 GMTThis RSS feed URL is deprecated, please update. New URLs can be found in the footers at https://news.google.com/news
Microbiologists Identify Genes Necessary for Flu Virus Infiltration - The Chicago Maroon Tue, 24 Apr 2018 03:56:41 GMT

The Chicago Maroon

Microbiologists Identify Genes Necessary for Flu Virus Infiltration
The Chicago Maroon
Researchers created a library of 19,000 variations of human epithelial lung cells, each cell missing a different gene, which could be inoculated with the H5N1 strain of the flu virus. The cells underwent five rounds of exposure to the H5N1 virus and ...

News Scan for Apr 20, 2018 - CIDRAP Fri, 20 Apr 2018 21:37:22 GMT

CNN

News Scan for Apr 20, 2018
CIDRAP
Between Jan 23 and Mar 22 the virus killed 14 wild birds and 11 of 85 hobby ducks. In Taiwan, authorities reported four more H5N2 outbreaks, part of activity involving the virus that has been underway since 2015. All four events involved poultry farms ...
Multistate Outbreak of E. coli O157:H7 Infections Linked to Romaine Lettuce | Investigation Notice: Multistate ...CDC
Case Count Maps | Investigation Notice: Multistate Outbreak of E. coli O157:H7 Infections April 2018 | E. coli | CDCCDC
E.coli (Escherichia coli) | E.coli | CDCCDC

all 233 news articles »
Influenza A Virus, H5N1 Subtype Infections Pipeline Research and Development 2018 - Healthcare Trends Fri, 20 Apr 2018 12:31:00 GMT

Influenza A Virus, H5N1 Subtype Infections Pipeline Research and Development 2018
Healthcare Trends
Influenza A Virus, H5N1 Subtype Infections Pipeline Review H1 2018 Global Markets Direct's latest Pharmaceutical and Healthcare disease pipeline guide Influenza A Virus, H5N1 Subtype Infections Pipeline Review, H1 2018, provides an overview of the ...

Mechanism That Enables Avian Flu Viruses to Infect Humans Discovered - Technology Networks Wed, 18 Apr 2018 09:16:28 GMT

Technology Networks

Mechanism That Enables Avian Flu Viruses to Infect Humans Discovered
Technology Networks
This ability to cross the species barrier is important because “highly pathogenic avian influenza A viruses pose a continuing threat to human and animal health and bear the potential for new influenza pandemics,” the researchers wrote. “Since 2003, 860 ...

Doctor stands firm on bird-flu warning amid govt denials - The Nation Tue, 27 Mar 2018 18:08:48 GMT

The Nation

Doctor stands firm on bird-flu warning amid govt denials
The Nation
According to the World Health Organisation, not all avian influenza viruses cause disease in humans but some can infect humans and cause severe infections. The most well-known of these is the H5N1 virus. Thiravat added that he had already forwarded ...

and more »
Genetic screening tool identifies how the flu infiltrates cells - Science Daily Wed, 11 Apr 2018 15:45:59 GMT

Genetic screening tool identifies how the flu infiltrates cells
Science Daily
The researchers then exposed the cells to the H5N1 flu strain, a type of influenza A virus commonly known as the bird flu. If the virus was able to infect and kill one of the host cells, that means the gene and the proteins it produces didn't play a ...

Dept hits back at bird flu cover-up charge - Bangkok Post Wed, 28 Mar 2018 00:22:42 GMT

Dept hits back at bird flu cover-up charge
Bangkok Post
Dr Thirawat said the public deserved to be warned so they could have better awareness. "It is not important whether or not it is new or old information. But the fact is there was an outbreak of H5N1 in the province and nearby, while such information ...

and more »
Bird flu scare shuts down popular songbird garden in Hong Kong for 21 days - South China Morning Post Fri, 13 Apr 2018 10:17:25 GMT

South China Morning Post

Bird flu scare shuts down popular songbird garden in Hong Kong for 21 days
South China Morning Post
The bird garden and market area was last closed in July 2012 after the H5N1 virus was detected among songbirds. According to government data, there has so far been no human cases of bird flu reported in Hong Kong this year, but the virus was detected ...

and more »
Gene Edit Library Identifies Targets for Flu Therapy - Technology Networks Wed, 11 Apr 2018 10:33:24 GMT

Technology Networks

Gene Edit Library Identifies Targets for Flu Therapy
Technology Networks
The researchers then exposed the cells to the H5N1 flu strain, a type of influenza A virus commonly known as the bird flu. If the virus was able to infect and kill one of the host cells, that means the gene and the proteins it produces didn't play a ...

and more »
Influenza a Virus, H5N1 Subtype Infections - Pipeline Review, H1 2018; New Report Launched - Digital Journal Fri, 30 Mar 2018 20:41:31 GMT

Influenza a Virus, H5N1 Subtype Infections - Pipeline Review, H1 2018; New Report Launched
Digital Journal
DrugPipeline.net has announced the addition of “Influenza A Virus, H5N1 Subtype Infections - Pipeline Review, H1 2018” research report to their website www.DrugPipeline.net. This press release was orginally distributed by SBWire. Bangalore, India ...

and more »

Bookmark and Share