STORY: "We don't think that it is sustainable considering the behavior of the virus," WHO Director-General Tedros Adhanom Ghebreyesus told a media briefing.
Speaking after Tedros, WHO emergencies director Mike Ryan said the impact of a "zero-COVID" policy on human rights also needs to be taken into consideration alongside the effect on a country's economy from any COVID policy.
Under zero-COVID, Chinese authorities lock down large population areas to stamp out viral spread in response to any coronavirus outbreak, even if just a small number of people test positive.
Shanghai's measures have been particularly strict, with residents allowed out of compounds only for exceptional reasons, such as a medical emergency. Many are not even allowed out of their front doors to mingle with neighbors.