Confirmed or suspected cases of thenew varianthave already emerged in several European countries, in Israel and in Hong Kong, just days after it was identified by researchers in South Africa....
They were immediately put into isolation, most at a nearby hotel, while sequencing was carried out....
Israel on Sunday approved barring entry to foreign nationals and the use of controversial technology for contact tracing as part of its efforts to clamp down on a new coronavirus variant....
综合
芝加哥论坛报-国家与世界
2021-11-29 00:00:00.0