The World Health Organization chief said late Sunday that he was self-quarantining after someone he had been in contact with tested positive for Covid-19, but stressed he had no symptoms.

Tedros Adhanom Ghebreyesus, director-general of the World Health Organization (WHO), speaks at a press conference after the WHO emergency committee's meeting on the novel coronavirus in China at its headquarters in Geneva, Switzerland, Jan. 22, 2020. (Photo: Xinhua)

"I have been identified as a contact of someone who has tested positive for #COVID19," Tedros Adhanom Ghebreyesus said in a tweet.

"I am well and without symptoms but will self-quarantine over the coming days, in line with @WHO protocols, and work from home," he added.