Some cities in China have deployed the means of using anal swabs as a way to detect potential covid-19 infections, just as the country steps up to ensure that there are no infected persons with the new coronavirus.
Study shows virus traces in faecal samples could remain detectable for a longer time and provide more accurate test results.
This is coming after a throat swab on a 52-year-old man in Weinan, a city in northern Shaanxi province, showed negative results but tested positive using nose and anal swabs.
The man, who was confined to a centralised facility for medical observation as a close contact of another COVID-19 patient earlier this month, was then confirmed to have the virus, an official told a news conference.
Such swabs could be useful in helping minimise the risk of a relapse after recovery, a video posted by Zhang Wenhong of Huashan Hospital in Shanghai showed.