Theresa42
Well-known member
31. May 2006, Swissinfo
Wild birds fingered over H5N1 role
Scientists meeting in Rome have made important progress in identifying the role wild birds play in spreading the bird flu virus in Europe, according to a Swiss expert.
But Katharina St?rk, head of monitoring at the Federal Veterinary Office, said many questions remained unanswered and further research was needed.
St?rk was speaking on Wednesday at the end of a two-day conference held by the Food and Agriculture Organization (FAO) and the World Organisation for Animal Health.
The meeting, which was attended by around 300 scientists from over 100 countries, set out to fix the role played by wild birds in introducing bird flu into new areas. Scientists have been split on whether domestic poultry or wild birds are to blame.
"I think we all share the view that there are still a lot of questions that remain open, but for the first time there was no dispute about the fact that wild birds do have a role in the spread of the virus," St?rk told swissinfo.
"However, each country has to be looked at on a case-by-case basis. Wild birds may be relevant for the introduction of the virus in European countries, but in other countries that have different trade contacts and different levels of protection things might be different."
According to the FAO, wild birds are responsible for spreading the virus in Europe, a combination of domestic poultry and wild birds are to blame in Asia, whereas the poultry trade appears to be responsible in Africa.
"We need more coordination to bring together all the information in order to better understand and solve the puzzle," said Joseph Domenech, the FAO's chief veterinary officer.
Screening programme
With this in mind, the Federal Veterinary Office is to conduct research over the summer around Lake Constance -- where the majority of Swiss bird flu cases have been found -- to see whether wild birds that permanently live there carry the virus.
St?rk said the Swiss would also be examining research conducted in the Netherlands on how three species of duck common to Switzerland are susceptible to the virus and how they react to it.
"We have an ongoing screening programme at Lake Constance and I would expect an increased level of monitoring in the autumn when migratory birds that spend the winter in Switzerland arrive again," she said.
The veterinary office set up a nationwide screening programme in September last year as part of a Europe-wide initiative. Since then more than 1,000 wild birds have been tested.
Officials still maintain that the risk of infection from illegally imported live birds and poultry meat is greater than that from migratory birds.
The first case of bird flu in Switzerland was discovered on February 27 in Geneva. Since then there have been 32 cases of the deadly variant H5N1 among wild birds -- the last on March 31.
The arrival of the virus in neighbouring countries at the beginning of February prompted the government to reintroduce a ban on keeping poultry outdoors. The order was lifted on May 1.
swissinfo, Adam Beaumont
http://www.nzz.ch/2006/05/31/eng/article6767916.html
Wild birds fingered over H5N1 role
Scientists meeting in Rome have made important progress in identifying the role wild birds play in spreading the bird flu virus in Europe, according to a Swiss expert.
But Katharina St?rk, head of monitoring at the Federal Veterinary Office, said many questions remained unanswered and further research was needed.
St?rk was speaking on Wednesday at the end of a two-day conference held by the Food and Agriculture Organization (FAO) and the World Organisation for Animal Health.
The meeting, which was attended by around 300 scientists from over 100 countries, set out to fix the role played by wild birds in introducing bird flu into new areas. Scientists have been split on whether domestic poultry or wild birds are to blame.
"I think we all share the view that there are still a lot of questions that remain open, but for the first time there was no dispute about the fact that wild birds do have a role in the spread of the virus," St?rk told swissinfo.
"However, each country has to be looked at on a case-by-case basis. Wild birds may be relevant for the introduction of the virus in European countries, but in other countries that have different trade contacts and different levels of protection things might be different."
According to the FAO, wild birds are responsible for spreading the virus in Europe, a combination of domestic poultry and wild birds are to blame in Asia, whereas the poultry trade appears to be responsible in Africa.
"We need more coordination to bring together all the information in order to better understand and solve the puzzle," said Joseph Domenech, the FAO's chief veterinary officer.
Screening programme
With this in mind, the Federal Veterinary Office is to conduct research over the summer around Lake Constance -- where the majority of Swiss bird flu cases have been found -- to see whether wild birds that permanently live there carry the virus.
St?rk said the Swiss would also be examining research conducted in the Netherlands on how three species of duck common to Switzerland are susceptible to the virus and how they react to it.
"We have an ongoing screening programme at Lake Constance and I would expect an increased level of monitoring in the autumn when migratory birds that spend the winter in Switzerland arrive again," she said.
The veterinary office set up a nationwide screening programme in September last year as part of a Europe-wide initiative. Since then more than 1,000 wild birds have been tested.
Officials still maintain that the risk of infection from illegally imported live birds and poultry meat is greater than that from migratory birds.
The first case of bird flu in Switzerland was discovered on February 27 in Geneva. Since then there have been 32 cases of the deadly variant H5N1 among wild birds -- the last on March 31.
The arrival of the virus in neighbouring countries at the beginning of February prompted the government to reintroduce a ban on keeping poultry outdoors. The order was lifted on May 1.
swissinfo, Adam Beaumont
http://www.nzz.ch/2006/05/31/eng/article6767916.html