China's coronavirus outbreak poses a "very grave threat for the rest of the world" and should be viewed as "Public Enemy Number 1", the head of the World Health Organization (WHO) said on Tuesday.
WHO director-general Tedros Adhanom Ghebreyesus urged countries to step up measures to detect and contain the virus, especially in at least 30 countries with weaker health systems, where it could "create havoc".
The virus has been named COVID-19, for coronavirus disease 2019, with no geographical association, he said.
