<div>The current pandemic of COVID-19 is caused by the severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2), a betacoronavirus similar to that which caused the SARS-CoV and MERS-CoV earlier. Scientists are pursuing therapeutic drugs and vaccines to counter the relentless spread of the virus, but so far, none has been established to be effective. However, several are in clinical trials in various parts of the world.</div>