Abstract:
Coronavirus disease (COVID-19) is an infectious disease
caused by the SARS-CoV-2 virus. At the start of the
pandemic, scientists and pharmaceutical companies
frantically searched for an effective vaccine. 1-4 Various
platforms have employed traditional vaccine develop-
ment approaches like live attenuated virus, inactivated
virus, recombinant-protein based, viral-like particles
and explored newer platforms like non-replicating viral
vector, replicating viral vector, peptide-based, DNA
and RNA based vaccines.1-8 There are currently over
300 COVID-19 candidate vaccines at different levels of
development but about ten are currently being used.