The Effects of COVID-19 Vaccination Campaign on SARS-CoV-2 Pandemic Worldwide

The Effects of COVID-19 Vaccination Campaign on SARS-CoV-2 Pandemic Worldwide

Coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has spread from China to countries worldwide. The WHO declared that the outbreak constitutes a Public Health Emergency of International Concern (PHEIC) in January 2020. COVID-19 is spreading worldwide, with more than 140 million confirmed cases and three million deaths across over 193 countries. COVID-19 vaccination is considered one of the best strategies to control the pandemic worldwide. As of Apr 19, 2021, the Oxford-AstraZeneca was the most widely used COVID-19 vaccine worldwide, followed by the Pfizer-BioNTech and Sputnik V.