1. COVID-19 vaccines and herd immunity: perspectives, challenges and prospects;Wong;Malays. J. Pathol.,2021
2. Omicron SARS-CoV-2 new variant: global prevalence and biological and clinical characteristics;Meo;Eur. Rev. Med. Pharmacol. Sci.,2021
3. The shot, the message, and the messenger: COVID-19 vaccine acceptance in Latin America;Argote;npj Vaccines,2021
4. COVID-19: a global challenge with old history, epidemiology and progress so far;Khan;Molecules,2020