New Delhi: Scientists have claimed that the prevalent bird flu virus in China may be more widespread and extensive than thought. The deadly virus that has killed more than 100 people this winter is hard to detect in chickens and geese, animal health experts say. Poultry that have contracted the H7N9 strain of the avian flu virus show little or no sign of symptoms. That means any infection is only…
China bird flu virus may be more extensive: Report
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