In December 2019 during the time of Christmas in the virology institute of China, Wuhan leaked a virus. After few days some people were admitted in the hospital due to cough and headache the doctors treated them and let go. Next day some people were admitted in the hospital due to the same symptom then the doctors treated them and let go of them. The next day so many people were admitted in the hospital due to same symptom then the doctors asked them for blood test. In the blood test had understood that people are infected with corona virus.After few days some people were found dead when the test results came they also had Novel corona virus. Then doctors understood the seriousness about this virus.They started to find the first admited patients due to this they found them and asked where did you went before coming to hospital they said they went to Live anolimal market of Wuhan. They found all of the people who went to the market there were so many people and they isolated them and asked who all did you meet .They met so many people so they understood that the count of the numbers of the patients wil be very huge. In the same day itself somany people died. This was the first outbreak covid 19 virus and now the virus has spread all over world.