Taiwan has not received an invitation to attend for the fifth year in a row.
"Working 55 hours or more per week is a serious health hazard," said Maria Neira, director of the WHO's Department of Environment, Climate Change and Health.
"Taiwan's outstanding control of COVID-19 and its donations of PPE demonstrate its strong contribution to global health," State Department spokesman Ned Price tweeted Friday.
Hans Kluge urges ramping up of manufacturing and asks governments to share excess shots
The head of the World Health Organization (WHO) says further investigation is needed to conclusively rule out a theory that Covid-19 emerged from a laboratory in China.
UK and US criticise WHO's Covid report and accuse China of withholding data.
According to the draft, the U.S. secretary of state will be required to develop a strategy to help Taiwan return to the WHO as an observer.
Dr Tedros Adhanom Ghebreyesus says he supports patent waiver to help countries make and sell cheap vaccine copies
Dr Michael Ryan says Covid-19 is ‘very much in control’ as global infections rise for first time in almost two months