Just two weeks before the start of the Beijing Winter Olympics, China has brought back anal swab testing to detect Covid-19 in a bid to stop the spread of the Omicron variant.
The use of an anal swab began about a year ago. At that time, all foreigners entering China underwent this procedure.
The United States has objected to testing its diplomats, but China has continued to do so. After China announced that it had dealt with the virus, anal testing was stopped.
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