(原始内容存档于2021-01-29). COVID-19vaccinationin Sudan. UNICEF. [2021-03-19]. (原始内容存档于2021-02-25). Sudan receives first delivery of COVID-19 vaccines with over
For Prevention Of COVID-19 - Tweet WHO lists 9th COVID-19 vaccine for emergency use with aim to increase access to vaccinationin lower-income countries
Reis, Ph.D., and Ran D. Balicer, M.D. BNT162b2 mRNA Covid-19 Vaccine in a Nationwide Mass Vaccination Setting. The New England Journal of Medicine. 2021-02-24