Omicron was first reported on November 25, 2021. Even after several waves of the pandemic, at a time when a considerable proportion of...

As of July 20, 2021, COVID-19 variants have been reported in numerous countries and quickly became the cause of the majority of COVID-19...

The world is filled with various colours of roses. We have pink, red, white, and even orange roses. The diversity in the colour of roses,...