HI FRIENDS .Welcome to HEALTH SCIENCE TUBERS. This vedio is the collection of information regarding the origin of novel corona virus, how it is named so and what it does/ how does it act on the body. Once the virus enters the body it starts its replication on the host(our body). IT uses ACE receptor in the lungs as an entry point to hook into and start damaging it. It continues its action with three phases of attack like viral replication, hyper reactivity of immune system and pulmonary destruction. It also results in cytokine storm inturn causing MULTI ORGAN FAILURE. COVID-19 IS highly communicable and precautious measures like hand washing, social distances must be seriously followed.