News / Health

FAO Issues Avian Flu Warning

Health workers take a blood sample from a chicken in Hong Kong, April 11, 2013.
Health workers take a blood sample from a chicken in Hong Kong, April 11, 2013.

Multimedia

Audio
Joe DeCapua
Avian flu continues to pose serious health threats to both human and animal health, especially as the flu season approaches. That’s the warning issued Monday by the U.N. Food and Agriculture Organization.


The FAO is calling on the international community to be vigilant for any signs of H5N1 and the new H7N9 avian flu. The former has been around for years, but H7N9 was first reported in China only last April. About 130 human infections were confirmed. Many of those patients had reported contact with poultry. Most had severe respiratory illness. Forty-four people died.

FAO senior animal health officer Ian Douglas said timing of the warning is important.

“We’ve had over a decade of experience with H5N1 avian influenza virus and generally speaking we’ve seen this pattern of increase of incidence of the disease with the coming of cooler weather following summer. The experience with H7N9 version of avian influenza virus is much more limited. But whilst the number of human cases of that infection have declined, there is the possibility that it could reemerge and become a more prevalent infection.”

While both strains can jump from poultry to humans, there is a difference between the two.

Douglas said, “The difference perhaps is significant in so far as H7N9 has not been observed to cause much of clinical disease in poultry. And this constitutes a much great challenge because it’s not immediately obvious where the birds are infected and therefore, of course, the root of transmission to humans is somewhat more concealed.”

The lack of clinical signs makes is difficult to detect.

Health officials are very concerned that avian flu viruses might mutate and allow infections between people, not just between people and poultry. But is there any evidence, so far, that human to human transmission has occurred?

“There have been some suggestions,” he said, “of clusters where with very close contact that might have been the case. But of course the possibilities exist for a common exposure to an animal source. Avian influenza viruses can survive for some time outside of the bird or human host and contamination of the environment, at least for a reasonably short period of time, is possible.”

Douglas said that avian influenza viruses have the potential to produce a pandemic of human infection.

“In the case of H5N1, fairly rapidly. Over 60 countries in the world reported some cases occurring either in domestic or wild birds. That number is much reduced. Today, however, the infections remain endemic from Egypt across South and Southeast Asia and somewhat entrenched in those populations.”

He said it’s not clear whether H7N9 would behave the same way, adding there’s much to learn about the virus.

Established control methods involve culling -- and vaccinations in the case of the H5N1 virus. But the response must also include tracking where the birds came from and their intended destinations – and ensure that poultry markets adhere to sanitation guidelines.

You May Like

Multimedia Social Media Documenting, Not Driving, Hong Kong Protests

Unlike in Arab Spring uprisings, pro-democracy protesters in Hong Kong aren't relying on Twitter and Facebook to organize, but social media still plays a role More

Analysis: Occupy Central Not Exactly Hong Kong’s Tiananmen

VOA's former Hong Kong, Beijing correspondent compares and contrasts 1989 Tiananmen Square protest with what is now happening in Hong Kong More

Bambari Hospital a Lone Place of Help in Violence-Plagued CAR

Only establishment still functioning in CAR's second city is main hospital More

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
The Legacy of Jimmy Carter: The Preacher from Plainsi
X
October 01, 2014 10:45 AM
It is common in the United States to see tourists flock to sites associated with America's presidents. Some are privately owned and others are run by the National Park Service or the National Archives -- but most have helped draw business and people into the towns and cities where they are located. As VOA’s Kane Farabaugh reports, there is one particular presidential hometown that is unique in what it has to offer those who make the trip.
Video

Video The Legacy of Jimmy Carter: The Preacher from Plains

It is common in the United States to see tourists flock to sites associated with America's presidents. Some are privately owned and others are run by the National Park Service or the National Archives -- but most have helped draw business and people into the towns and cities where they are located. As VOA’s Kane Farabaugh reports, there is one particular presidential hometown that is unique in what it has to offer those who make the trip.
Video

Video Hong Kong Protests Draw New Supporters on National Holiday

On the 65th anniversary of the founding of Communist China, Hong Kong protesters are hoping to stage the largest pro-democracy demonstration since the 1989 Tiananmen protests. VOA's Brian Padden visited one of the protest sites mid-day, when the atmosphere was calm and where the supporters were enthusiastic about joining what they are calling the umbrella revolution.
Video

Video India's PM Continues First US Visit

India's prime minister is on his first visit to Washington, to strengthen political and economic ties between the world's oldest and the world biggest democracies. He came to the U.S. capital from New York, the first stop on his five-day visit to the country that denied him an entry visa in the past. From Washington, Zlatica Hoke reports Modi seemed most focused on attracting foreign investment and trade to increase job opportunities for his people.
Video

Video Malaysia Struggles to Stop People Joining Jihad

Malaysian authorities say militant groups like the so-called "Islamic State" have used social media to entice at least three dozen Malaysian Muslims to fight in what they call "jihad" in Syria and Iraq. As Mahi Ramkrishnan reports from Kuala Lumpur, counterterrorism police are deeply worried about what could happen when these militants return home.
Video

Video Could US Have Done More to Stop Rise of Islamic State?

President Obama says airstrikes against Islamic State militants in Syria will likely continue for some time because, in his words, "there is a cancer that has grown for too long." So what if President Obama had acted sooner in Syria to arm more-moderate opponents of both the Islamic State and the Syrian government? VOA State Department Correspondent Scott Stearns reports from the United Nations.
Video

Video Treasure Hunters Seek 'Hidden Treasure' in Central Kenya

Could a cave in a small village in central Kenya be the site of buried treasure? A rumor of riches, left behind by colonialists, has some residents dreaming of wealth, while others see it as a dangerous hoax. VOA's Gabe Joselow has the story.
Video

Video Ebola Patients Find No Treatment at Sierra Leone Holding Center

At a holding facility in Makeni, central Sierra Leone, dozens of sick people sit on the floor in an empty university building. They wait in filthy conditions. It's a 16-hour drive by ambulance to Kailahun Ebola treatment center. Adam Bailes was there and reports on what he says are some of the worst situations he has seen since the beginning of this Ebola outbreak. And he says it appears case numbers may already be far worse than authorities acknowledge.
Video

Video Identifying Bodies Found in Texas Border Region

Thousands of immigrants have died after crossing the border from Mexico into remote areas of the southwestern United States in recent years. Local officials in south Texas alone have found hundreds of unidentified bodies and buried them in mass graves in local cemeteries. Now an anthropologist and her students at Baylor University have been exhuming bodies and looking for clues to identify them. VOA’s Greg Flakus has more from Waco, Texas.
Colonel Steve ‘Spiros’ Pisanos left Greece and came to the U.S. to learn to fly. He flew fighters for the Allies in World War II, narrowly escaping death multiple times.Colonel Steve ‘Spiros’ Pisanos left Greece and came to the U.S. to learn to fly. He flew fighters for the Allies in World War II, narrowly escaping death multiple times.

AppleAndroid