Saudi Arabia has approved two more COVID-19 vaccines, developed by two China’s Sinovac Biotech Ltd and China National Pharmaceutical Group Corporation that is commonly named as Sinopharm. With the latest approval, the kingdom has approved vaccines of six developers. Four other approved vaccines are: Oxford-AstraZeneca, Pfizer-BioNTech, Johnson & Johnson, and Moderna, reports Arab News. Earlier, the country announced to accept visitors with Sinopharm or Sinovac vaccines, only after receiving booster shots.