INTERVIEW-Don't give in to bird flu fatigue, says WHO expert
http://www.alertnet.org/thenews/newsdesk/L25263165.htm
By Stephanie Nebehay
GENEVA, April 26 (Reuters) - The world must prepare for a long-term fight against bird flu and not give in to fatigue that seems to have set in, a senior World Health Organisation (WHO) official warned.
Keiji Fukuda, acting director of WHO's global influenza programme, said it was the H5N1 virus's tenacity rather than geographical spread that has raised the risk it could evolve into a form that moves more easily among humans.
The deadly virus, first seen in this outbreak in Asia in 2003, has infected birds in a score more countries in recent months, moving into the Middle East, Europe and, worryingly for the WHO, into Africa where resources to fight it are scarce.
It has triggered new human outbreaks and deaths in Turkey, Egypt, Iraq and Azerbaijan this year, while claiming more lives in China, Cambodia and Indonesia.
"Organisations and countries are pretty exhausted by this. Yet it is clear we are in the middle of a long-term fight," Fukuda told Reuters in an interview in his Geneva office.
Efforts to boost detection and control of the disease in birds and humans must continue across all regions, the American scientist said.
"All of those things that we had to do when there was so much energy being put in a year or two ago, that has to be sustained. I think those are hard things to do when there is a collective weariness in dealing with this agent," Fukuda said.
He said the virus, endemic in parts of Asia, retains its capacity to undergo changes and perhaps evolve into a pandemic virus which could spread rapidly and kill millions of people.
"In terms of the potential of the virus to evolve and become a pandemic virus, it's not really so much the spread of the virus out there, but the ability of this virus to persist and to infect a large number of birds and different species," he said.
"It basically means that this virus has a good ability to stay around. That is what increases the risk that this virus can continue to evolve and gain transmissibility properties it would need to develop into a pandemic virus."
Bird flu remains essentially an animal disease, but is known to have infected 204 people worldwide since 2003, killing 113 of them, according to the WHO, a United Nations agency.
The WHO rates the level of pandemic threat at phase three on a scale of six, meaning there is so far no or very limited human-to-human transmission. Fukuda said that there was no evidence pointing to escalation to the next level.
IN THE SAME BOAT
Awareness that bird flu is not just a regional but a global problem had grown in recent months, he said. "So in a way, Europe is in the same boat as is Africa, as is Asia."
This had spurred authorities to build resources to confront bird flu -- including better surveillance and laboratory testing, and efforts to control the virus in poultry.
It was "a long-distance run, not a sprint", but flexibility was important to adjust to country situations, which vary.
"When the virus moved into Africa it became very clear to us that the potential for the virus to move quickly, ahead of our efforts to establish surveillance, is very real," he said.
The WHO was now focusing on quick and inexpensive efforts such as public education messages on measures to prevent infection, he said.
Public messages should include telling children that they shouldn't touch dead birds.
"If you happen to pick up a dead bird, you should wash your hands. Dead birds -- if there are other food alternatives -- are not what you should be using and handling for food.
"If you can get those messages out there, that is an important way of protecting people, even though you may not have antiviral drugs or vaccines and so on," he said. H5N1 is now documented in five countries in Africa -- Egypt, Nigeria, Niger, Cameroon and Burkina Faso.
No human cases have been confirmed on the huge continent where surveillance and health care systems are often poor.
"If at some point we see human cases identified in Africa, it is not going to be a surprise. But I think that a lot of those steps that have to be put in motion are being put in motion," he added.