Abstract
The severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) pandemic has led
to an unprecedented public health crisis. The collective global response has led to
production of multiple safe and effective vaccines utilizing novel platforms to combat
the virus that have propelled the field of vaccinology forward. Significant challenges
to universal vaccine effectiveness remain, including immune evasion by SARS-CoV-2
variants, waning of immune response, inadequate knowledge of correlates of protection,
and dosing in special populations. This review serves as a detailed evaluation of
the development of the current SARS-CoV-2 vaccines, their effectiveness, and challenges
to their deployment as a preventive tool.
Keywords
COVID-19 - SARS-CoV-2 - vaccines - variants - immunity