Passengers arriving from overseas to China must undergo a new Covid-19 test, no longer carried out in the nose or throat , but in the rectum through anal swabs.
In the Daxing district, south of Beijing, more than a thousand teachers and students have been subjected to rectal screening, in addition to the nose and throat swab.
The test involves inserting a cotton-tipped swab about 1-2 inches into the rectum, which will then be tested for the virus.
Anal swab tests could be more accu...