Bird Flu Surge in China Spurs H7N9 Pandemic Vaccine Preparations

Bird Flu Surge in China Spurs H7N9 Pandemic Vaccine Preparations

Doug Kanter/Bloomberg

A Sinovac Biotech Ltd. technician checks chicken eggs under a light inside the company's laboratory in Beijing on Sep. 4, 2009. Sinovac has notified its suppliers that it may need to order additional fertilized chicken eggs to produce H7N9 vaccine.