Scientists investigate Mexican town’s flu mystery. No one has identified ground zero in the swine flu epidemic. Just where or when the new strain of influenza first jumped from a pig and began infecting people is a scientific mystery — one that a group of flu detectives is determined to solve. [News Source]

Swine flu hits Tokyo as cases surge past 10,000. The number of worldwide swine flu infections surged past 10,000 on Wednesday, as the epidemic gathered pace in the United States and the first case was recorded in Tokyo. [News Source]

Scientists investigate Mexican town’s flu mystery. No one has identified ground zero in the swine flu epidemic. Just where or when the new strain of influenza first jumped from a pig and began infecting people is a scientific mystery — one that a group of flu detectives is determined to solve. [News Source]

Swine flu hits Tokyo as cases surge past 10,000. The number of worldwide swine flu infections surged past 10,000 on Wednesday, as the epidemic gathered pace in the United States and the first case was recorded in Tokyo. [News Source]

Northwest China province on avian flu alarm (China Daily) XINING -- Northwest China's Qinghai Province is still on alarm Thursday, four days after an H5N1 avian flu outbreak was confirmed in one of its Tibetan counties, the local animal epidemic prevention authority said. [News Source]