The Coronavirus or COVID-19 is a 21st century pandemic. A pandemic means an epidemic that has spread across a large region, for example the dismal Small Pox in the 19th Century that killed more than 300 million people globally. We now have a new evil.

Structurally, COVID-19 is an RNA virus which is similar to the SARS or MERS epidemic. Coronavirus has been described for more than 50 years. With more than five lakh cases reported in over 200 countries, it has claimed more than 22,000 souls since January 22, 2020. This mysterious virus was present in 2013 in China, but has reemerged probably because of the oversight then.