WHO data on bird flu raises new questions about human transmission

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Employees dispose uninfected dead birds at a treatment plant as part of preventive measures against the H7N9 bird flu in GuangzhouBy Megha Rajagopalan BEIJING (Reuters) – More than 50 percent of patients infected with a new type of bird flu in China had no contact with poultry, the World Health Organization said on Friday, further raising questions about whether the virus was transmitted between humans. The H7N9 virus has so far infected 87 people in China and killed 17, but it remains unclear how they contracted the disease. A Chinese official earlier this week said about 40 percent of patients had been in no contact with poultry. …

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