Employees pack newly made face masks at a factory in Rizhao, Shandong province November 18, 2009. China and the U.S. agreed on Tuesday to further collaboration and joint research in the health sector and in the control of diseases, especially pandemics, according to a joint statement issued after talks between Chinese President Hu Jintao and visiting U.S. President Barack Obama, Xinhua News Agency reported. REUTERS/Stringer (CHINA SCI TECH HEALTH BUSINESS) CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA
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