WHO says it acted "quickly and decisively" on coronavirus

The Geneva-based U.N. body has faced mounting criticism in recent weeks, especially from top donor the United States, which has cut off funding.

"From the beginning, the WHO has acted quickly and decisively to respond to warn the world," WHO Director-General Tedros Adhanom Ghebreyesus said after giving a timeline of what the body knew in the lead-up to declaring COVID-19 a global emergency on January 30.

"We sounded the alarm early and we sounded it often," he added.