But the most perplexing report involved the single case in France — a wild duck found dead in the suburbs of Lyon — because migratory birds from Asia that carry the virus do not normally travel there at this time of year.
"After several years in one place, why is it now moving so rapidly?" asked Dr. Samuel Jutzi, director of the Animal Production and Health Division at the United Nations Food and Agriculture Organization in Rome. "There is a lot about this that we just don't know."
The dead duck in France, he said, was "very odd, very difficult to explain." But he added, "What is known is that the width of flyways are very broad, and there may have been a swarm that went farther westward than normal."
In Western Europe, the disease has been confined to wild migratory birds, and authorities across the Continent were taking severe measures to protect domestic poultry. Many countries are now requiring that all poultry be kept indoors to prevent mixing with potentially infected wild birds.
In recent days, a wild duck in central Italy was also found dead from the virus, the first time it had been found so far north in that country.
On the German island of Rügen in the Baltic Sea, 18 wild birds were confirmed to have the disease, bringing the total of infected birds there to 59 in the past week, mostly swans and hawks. The German chancellor, Angela Merkel, visited the island on Sunday, a sign of how seriously European governments are taking the disease.
Germany is preparing to kill at least some of the 400,000 domestic birds on the island to make sure the virus does not spread into poultry flocks, local authorities said. When bird flu is detected in an area, the most effective way to control an outbreak is to kill all the birds in a surrounding area to isolate the highly infectious virus, and to ban movement of poultry in and out of the area.
But in India the disease is already in farm birds, raising more complicated issues, and the possibility that there will be human infections. Although the dreaded virus does not now readily infect humans or spread among them, more than 160 people have caught the disease worldwide, all of them people who had close contact with sick birds.
Experts are worried that A(H5N1) could acquire the ability to spread from human to human through natural processes, setting off a worldwide influenza pandemic.
Government officials in a rural district of western India on Sunday began to slaughter and inoculate roughly a million chickens, and dozens of people from the same area were dispatched to be tested, a day after test results confirmed the first outbreak of avian flu in this country.
没错 同意你的意见~
那个人实在是没有责任心~
而且做人要厚道啊`~