A World Health Organization official said Sunday that it wasn't surprising that a new strain of bird flu had spread to China's capital after sickening dozens of people in the eastern part of the country.

Up until Saturday, when Beijing officials reported the capital's first case of H7N9, all cases had been in Shanghai and other areas of eastern China. On Sunday, officials announced the first two cases in central Henan province, which is next to Beijing.

It's not the case that everyone confirmed to be infected with H7N9 was "clustered in one small area with the same source of exposure," said Michael O'Leary, head of WHO's office in China. "So we've been expecting new cases to occur. ... Furthermore, we still expect that there will be other cases."

A 7-year-old girl was Beijing's first confirmed case of H7N9. Four more cases were reported Sunday in eastern Zhejiang province and two more in Jiangsu, bringing to 57 the number of people sickened from the virus. Eleven of the victims have died.

Health officials believe the virus, which was first spotted in humans last month, is spreading through direct contact with infected fowl.

O'Leary said "the good news" was that there was still no evidence that humans had passed on the virus to other humans.

"As far as we know, all the cases are individually infected in a sporadic and not connected way," he said, adding that the source of infection was still being investigated.

The girl, whose parents are in the live poultry trade, was admitted to a hospital Thursday with symptoms of fever, sore throat, coughing and headache, the Beijing Health Bureau said.

O'Leary said early treatment can be effective, as demonstrated by the girl, who was in stable condition.

In the only other reported cases outside of eastern China, health officials in Henan province said tests on two men Thursday had later revealed they had the virus.

They said a 34-year-old restaurant chef who had displayed flu symptoms for about a week was in critical condition in a hospital, while a 65-year-old farmer who was in frequent contact with poultry was in stable condition after receiving treatment.

They said 19 people who had been in close contact with the two men did not show any flu symptoms.

China has been more open in its response to the new virus than it was a decade ago with an outbreak of SARS, when authorities were highly criticized for not releasing information.

Last week the WHO said there was not a problem. Now the story changes. Face it the WHO has no clue...China is a world health risk.

Almost three weeks after China reported finding a new strain of bird flu in humans, experts are still stumped by how people are becoming infected when many appear to have had no recent contact with live fowl and the virus isn't supposed to pass from person to person.

The uncertainty adds to challenges the Chinese government is facing in trying to control the spread of the H7N9 bird flu virus that has already killed 17 people and infected 70 others in the country, mostly along the eastern seaboard.

"To me, the biggest question is the link between the virus in birds and how it gets to humans. This is not clear," said Dr. Bai Chunxue, a prominent respiratory expert in Shanghai who treated one of the first cases of the virus, a family cluster involving an 87-year-old man and his two sons. Bai said other family members he talked to said the patients had no contact with birds or poultry.
http://news.yahoo.com/experts-unclear-china-bird-flu-infects-humans-102227149.html