TableĀ 1

Most common types of COVID-19 vaccines, mode of action, and release time.

Vaccine name

Manufacturing country

Mode of action

Time of release

Sputnik V

Russia

viral vector-based vaccines

August 2020

AstraZeneca

UK/USA Oxford University/Cambridge

viral vector-based vaccines

released in 2021

The Janssen/Johnson and Johnson vaccine

USA

viral vector-based vaccines

February 2021

Moderna

USA

novel mRNA-based SARS-CoV-2 vaccines

released in 2020

Pfizer-BioNTech

USA

novel mRNA-based SARS-CoV-2 vaccines

December 2020

Sinovac's CoronaVac

China

whole virus technology(inactivated or killed virus)

December 2020

Novavax

USA

Protein sub-unit vaccine

released in 2021