ABSTRACT Introduction Appearances of SARS-CoV-2 variants have created havoc and
additional challenges for the ongoing vaccination drive against pandemic COVID-19 …

Introduction Vaccination continues to be the most effective method for controlling COVID-19
infectious diseases. Nonetheless, SARS-CoV-2 variants continue to evolve and emerge …

The ongoing COVID-19 pandemic caused by severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) has become a global threat. Despite strict control measures …

Over the past two years, the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-
2) has caused hundreds of millions of infections, resulting in an unprecedented pandemic of …

The record speed at which Chinese scientists identified severe acute respiratory syndrome
Coronavirus 2 (SARS-CoV-2) and shared its genomic sequence with the world, has greatly …

Coronavirus disease-2019 (COVID-19) vaccines are being used across the globe to reduce
the risk of developing COVID-19, stop the transmission of severe acute respiratory syndrome …

Introduction Multiple COVID-19 vaccines have been approved and employed in the fight
against the pandemic. However, these vaccines have limited long-term effectiveness against …

ABSTRACT As of September 2021, 117 COVID-19 vaccines are in clinical development,
and 194 are in preclinical development as per the World Health Organization (WHO) …

Currently, people all over the world have been affected by coronavirus disease 2019
(COVID-19). Fighting against COVID-19 is the top priority for all the countries and nations …

Abstract Coronavirus Disease 2019 (COVID-19) has been the most severe public health
challenge in this century. Two years after its emergence, the rapid development and …