Xinhua
Avian influenza is different from SARS in many ways, and there are three major difficulties in the prevention of this deadly disease, said an official with the World Health Organization (WHO) at the ongoing 55th Session of WHO Regional Committee for the Western Pacific.
Generally speaking, SARS mostly broke out in cities and hit people, but avian flu mainly occurs in rural areas among poultry. The surveillance systems in rural areas are often not as good as in urban areas, and the surveillance of humans is easier than of animals, said Shigeru Omi, director of WHO's Regional Committee for the Western Pacific, at a press briefing on the sideline of the conference Tuesday.
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