Trắc nghiệm: Although no H7N9 avian flu infections have reported in poultry or humans yet. the likelihood of outbreaks in Viet Nam is high,Although no H7N9 avian flu infections have reported in poultry or humans yet. the likelihood of outbreaks in Viet Nam is high.

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Although no H7N9 avian flu infections have reported in poultry or humans yet. the likelihood of outbreaks in Viet Nam is high, Although no H7N9 avian flu infections have reported in poultry or humans yet. the likelihood of outbreaks in Viet Nam is high.

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