The Saudi Ministry of Health has approved two additional COVID-19 vaccines, developed by AstraZeneca and Moderna, for use in the Kingdom. The Pfizer/BioNTech vaccine is already being used to immunize people in the country. Ibrahim Al-Oraifi, director general of health affairs in the Eastern Province, told Al Arabiya news channel that there is global competition for available supplies of vaccines, and that the demand for the Pfizer vaccine is “great.” ...