Since 15months or little more than that corona virus is spreading throughout the World without any barrier. Starting from the most developed country like America to many under develop countries covid-19 virus is in no way lesser than war-bomb. According to the report of WHO Globally up to 8th April 2021, vaccine doses have been administered to 669,248,795 people excluding this up to 6th April 135,446,538 confirmed cases of cov-19 were identified Globally. WHO tells up to 6th April, this year 2,927,922 death cases reported. America on the top where as India stood next to it. Only in USA 58,179,645 people died where as confirmed cases number is 30,772. Changed strain of corona virus is more dangerous. Even WHO advises, where the pandemic is spreading there people should be more conscious to take precaution at first hand; like maintaining physical distance, wearing mask, keeping rooms well ventilated & to avoid crowds. Also cleaning & coughing into a bent elbow or tissue & though not least, but the last to get vaccinate. To avoid ‘3C’ is the advice of WHO in which it has been mentioned that avoid spaces that are close, crowded or involve close contact. Each one should not touch his eyes, nose & mouth. Stay home & try to know the symptom of cov-19. If there is fever, dry cough, tiredness or loss of taste or smell, aches or pains, headache, sore throat, nasal congestion, diarrhea, red eyes or skin rash, then ask your near medical or doctor; whether these are the symptoms of cov-19 & walk according to their advice. So, each human being of the planet Earth should remain 24hrs vigilant to keep himself away from the infection of corona virus.