1. WHO Coronavirus (COVID-19) Dashboard [EB/OL],2022
2. Tracking SARS-CoV-2 Variants [EB/OL],2022
3. Pan American Health Organization,2021. Coronavirus disease(COVID-19) pandemic[EB/OL,2023
4. COVID-19 infection: origin, transmission, and characteristics of human coronaviruses;Shereen;J. Adv. Res.,2020
5. COVID-19: an aerosol's point of view from expiration to transmission to viral-mechanism;Ta-Chih;Aerosol Air Qual. Res.,2020