Multiple COVID-19 Vaccine Candidates Exist, WHO Chief Says On Monday, World Health Organization (WHO) Director-General Tedros Adhanom Ghebreyesus said there are about seven or eight top vaccine candidates that are being fast-tracked. Tedros Adhanom Ghebreyesus Tedros Adhanom Ghebreyesus The top candidates were not named. Tedros Adhanom Ghebreyesus Ghebreyesus said an association of more than 400 scientists is also working together for vaccine development and diagnostics. To date, over 4 million COVID-19 cases have been reported to the WHO with over 275,000 deaths.
