1. A Novel Coronavirus from Patients with Pneumonia in China, 2019
2. Coronavirus disease (COVID-19) pandemic; 2021. Available from: https://www.who.int/emergencies/diseases/novel-coronavirus-2019. Accessed March 25, 2020.
3. Coronavirus disease 2019 (COVID-19): situation summary; 2021. Available from: https://www.cdc.gov/coronavirus/2019-ncov/cases-updates/summary.html. Accessed March 25, 2020.
4. World Health Organization. Weekly epidemiological update—15 May 2022; 2022.
5. Safety and Efficacy of the BNT162b2 mRNA Covid-19 Vaccine