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China rejects reports of new bird flu strain
Beijing(China)—China agreed on
Friday to share long-sought bird flu virus samples with international
health authorities, after rejecting the existence and spread of a new
strain of H5N1 bird flu called “Fujian-like virus”.
The World Health Organisation (WHO) said 20 virus samples were being
sent to the US Center for Disease Control, a WHO collaborating centre,
raising hopes of a better understanding of how the H5N1 bird flu virus
is changing. “We are very encouraged by that. They are viruses from 2004
and 2005, and we will make follow-ups for the 2006 samples,” Henk
Bekedam, the WHO’s China representative, told reporters.
The decision comes after China rejected a report published by a paper
last week said several scientists had detected a new strain of H5N1 in
the southern Chinese province of Fujian last year. “The data used in the
article are erroneous and the research methodology is unscientific. The
conclusions of the paper are untenable and contravene the facts,” Jia
Youling, China’s chief veterinary officer, told a news conference.
The paper published in the US Proceedings of the National Academy of
Sciences that identified the “Fujian strain” said it may have started
outbreaks in Southeast Asia. “In fact, there is no such thing as a new
‘Fujian-like’ virus variant at all,” Jia said. “It is utterly groundless
to assert that the outbreak of bird flu in Southeast Asian countries was
caused by avian influenza in China and there would be a new outbreak
wave in the world.”
Rob Webster, of St. Jude Children’s Research Hospital in Memphis, and
Guan Yi, from Hong Kong University, said in the paper that the new
strain had already spread to Malaysia, Laos and Thailand, and may cause
a major outbreak in Asia and Europe. Jia questioned the reliability of
the paper’s data. Guan claimed that he collected over 50,000 samples
from Fujian, Guangdong and four other provinces. But Jia said none of
the veterinary authorities in these provinces received applications from
him as required by law.
Guan also failed to indicate the location and owners of the fowls he
used, against internationally accepted standards, Jia said. If Guan had
bought 50,000 poultry in markets for his research, then he would not
have used only 76 blood serum samples to support his study, as blood
serum tests are quite simple, Jia added. The only option left, he said,
is that Guan collected his samples from manure gathered in fowl markets.
If this was the case, then his results could not be exact, because
manure can be easily mixed with other materials and polluted, Jia said.
Chinese scientists also denied the paper’s claims that its vaccines were
ineffective against new strains, saying they were continually updating
vaccines as the virus changed.
—Daily Mail, People’s Daily news exchange item |