These flu viruses occur naturally among birds. Wild birds worldwide carry the viruses in their intestines, but usually do not get sick from them.
However, bird flu is very contagious among birds and can make some domesticated birds, including chickens, ducks, and turkeys, very sick and kill them.
Bird flu viruses do not usually infect humans, but several cases of human infection with bird flu viruses have occurred since 1997.
The H5N1 virus does not usually infect humans. In 1997, however, the first case of spread from a bird to a human was seen during an outbreak of bird flu in poultry in Hong Kong. The virus caused severe respiratory illness in 18 people, 6 of whom died.
Since that time, there have been other cases of H5N1 infection among humans. Most recently, human cases of H5N1 infection have occurred in Thailand, Vietnam and Cambodia during large H5N1 outbreaks in poultry.
The death rate for these reported cases has been about 50 percent. Most of these cases occurred from contact with infected poultry or contaminated surfaces; however, it is thought that a few cases of human-to-human spread of H5N1 have occurred
So far, spread of H5N1 virus from person to person has been rare and spread has not continued beyond one person.
However, because all influenza viruses have the ability to change, scientists are concerned that the H5N1 virus could one day be able to infect humans and 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 the H5N1 virus were able to infect people and spread easily from person to person, an influenza pandemic? (worldwide outbreak of disease) could begin. No one can predict when a pandemic might occur.
However, experts from around the world are watching the H5N1 situation in Asia very closely and are preparing for the possibility that the virus may begin to spread more easily and widely from person to person.
How Vulnerable Are You?
As the deadly Avian flu continues to spread throughout the world in migratory birds, the lifestyle you lead could put you at risk. In the event of a pandemic, will you be prepared?
Business Travelers ? Aero planes can be quite bad because they re-circulate air and that's ideal for spreading a flu virus throughout the whole cabin, says biostatistician Dr Iea Longini.
Students and Teachers ? Time spent where lots of people are crowded together, as in hostels and classrooms, raises the risk, says Dr John Treanor, a flu vaccine researcher.
Dads ? Children are the major transmitters, says Longini. In fact, parents, like teachers, will be in even more danger of contracting the flu this time, because, along with the rest of us, they'll lack any immunity to the H5N1 virus.
Commuters ? Those who use public transport will be at increased risk of contracting H5N1. Anytime people start coughing or sneezing close by, risk of transmission rises, says Lamb.
Religious People ? Handshakes, kids and close indoor seating make churches, synagogues and mosques likely places to pick up the flu. Congregating in one room is undoubtedly the way to spread infection, says professor of molecular biology Dr Robert Lamb.
Athletes and Sports Fans ? Virus transmission would be fast at an indoor sports game, Treanor says, or at a bar where people are gathered in front of a big-screen TV. In the event of a pandemic, you might see indoor sporting events cancelled.
Common cold or Avian Flu?
As the deadly Avian flu continues to spread throughout the world in migratory birds, many will never know the difference between catching the Avian flu and catching a common cold.
Below we will address the symptoms of the common cold and the Avian flu to help you better diagnose you and your family.
Knowing the difference could save your life!
For more info on how to protect yourself and your family visit the Canadian Pharmacy here: http://www.thebaide.ws
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H5n1 Avian Bird Flu
A hen clucks and shifts around in her perch. She sniffs and sneezes.
Inside the lining of her respiratory tract and lungs, millions of influenza viruses -- commonly called A/H5N1 or bird flu -- are infecting her cells and forcing them to replicate millions more of the virus.
This is the same virus that's deadly to chickens. People can catch it through close contact with chickens, but they can not spread it to other people.
The hen excretes, her white waste material -- full of A/H5N1 -- falling to the floor below, mixing in with the dirt and other chicken manure.
The pig below the hen also feels ill. Several days ago, the farmer who owns them both sneezed on the pig while feeding her. Now the pig has a case of ordinary human flu. It's not life-threatening to the farmer or the pig, but it is highly contagious.
Hungry despite her flu, the pig gobbles down some chicken manure, including some which contains A/H5N1.
A/H5N1 works its way through the pig's body to the pig's respiratory system. There, it starts drilling into the pig's cells with its spikes of hemagluttin.
There it meets up with a virus of ordinary flu infecting the pig -- just like two bank robbers who enter the same vault from two sides.
It's not true love, but it's not bad. They combine genetic material and soon have an offspring who's the best of both of them.
As contagious between human beings as ordinary flu.
As lethal to human beings as A/H5N1.
Soon Junior uses the neurasminadse protein spikes on his surface to cut himself loose from the pig's cell he calls home, and makes his way out into the world . . . to infect his very own cell.
He takes over its genetic material and soon has instructed the cell to replicate millions more of himself.
Soon those viruses are spreading through the pig.
Several days later, the farmer's oldest son comes to feed the pig. Heavily infected with the contagious form of lethal bird flu, the pig snorts and sneezes onto the boy.
Who later rough houses with his friends at school, including Pim.
Pim takes the virus home to his father, Yu.
The next day, Yu takes a bus to Bangkok to buy some supplies and equipment for his farm. He spends much of the day talking over his order with Mr. Chen, the owner of The White Lotus Farm Store.
Mr. Chen goes home that evening and spends a lot of intimate time with his wife, who is leaving tomorrow to spend two weeks visiting relatives in Chicago, U.S.A.
When Mrs. Chen boards the early morning Thai Airways flight to Los Angeles, she is not aware that 145 kilometers away from her, a chicken and a pig are dead . . . and a farmer's son and his friend are too sick to go to school.
Neither do the other 200 passengers who spend 11 hours breathing the same air as Mrs. Chen.
The farmers have taken their children to the nearby clinic, which has taken throat samples and sent them to the United Nations World Health Organization laboratories to be tested.
The doctor is worried, because the other family members are also feeling poorly and so many of their farm animals have died. He's feeling weak himself.
After landing at Los Angeles International Airport, some of Mrs. Chen's fellow passengers go into Los Angeles. Some of them go on to flights to Canada, Latin America and New York City. A few plan to continue on to London and Paris. Mrs. Chen finds her gate to a flight to Chicago.
A few days later, WHO and CDC workers fly to the small farming village and the government imposes a travel ban on the entire province.
In Chicago, Mrs. Chen has taken to her bed and her relatives are sneezing on their jobs . . .
Bird flu could become highly contagious in several ways. Here is one plausible scenario.
Both Verro & Richard Stooker are contributors for EditorialToday. The above articles have been edited for relevancy and timeliness. All write-ups, reviews, tips and guides published by EditorialToday.com and its partners or affiliates are for informational purposes only. They should not be used for any legal or any other type of advice. We do not endorse any author, contributor, writer or article posted by our team.
Verro has sinced written about articles on various topics from Software, Bird Flu and Yeast Infection. Theresa Williams is a grandmother of two and a part time farmer. She loves information, loves to impart some of her knowledge gained through life. For more info on the above article visit. Verro's top article generates over 135000 views. Bookmark Verro to your Favourites.
Richard Stooker has sinced written about articles on various topics from Bird Flu, Chess and Bird Flu. c 2006 by Richard StookerLearn How to Protect Yourself and Your Family From Bird FluLatest news and immune info at:. Richard Stooker's top article generates over 12100 views. Bookmark Richard Stooker to your Favourites.