FILE- In this Monday, July 9, 2012, file photo, Mean Thida, 4, affected with mystery disease, sleeps at her home near a dump site at Sambour village, on the outskirts of Phnom Penh, Cambodia. The enterovirus 71 strain, or EV-71, raised fears earlier this week after it was detected in some lab samples taken after 52 of 59 Cambodian children died suddenly from a mystery illness that sparked international alarm. Health officials are still investigating, but say the virus is likely to blame. (AP Photo/Heng Sinith, File)
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