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Ascher explained that these mutations can affect the ability of vaccines and drugs to bind the virus or create a specific immune response against it.
At Taojiang No 4 Middle School, 29 students had been confirmed with TB as of Thursday, including three that were cured, the Hunan health authority said last week.
At least two people were killed and another 70 injured after an Amtrak passenger train collided with a freight train in the southeastern US state of South Carolina early Sunday, officials said.
Aside from the Maute group, the Philippines also battles with other IS-linked groups like the Abu Sayyaf militants in the island provinces of Sulu and Basilan and the Bangsamoro Islamic Freedom Fighters (BIFF) in Maguinao, a province in central Mindanao.
Aside from the two special administrative regions of Hong Kong and Macao, the Greater Bay Area also covers nine cities of Guangdong province, including innovation hub Shenzhen and "world's factory" Dongguan.
来源：资阳报