Pandora's box opened near Wuhan Biosafety Level 4 Lab in December 2019

Public health groups like the U.S. Centers for Disease Control and Prevention (CDC) and World Health Organization, are monitoring the Covid 19 pandemic and posting updates on their websites. They also issued recommendations for preventing and treating the illness. The severity of COVID-19 symptoms ranges from mild to severe. Some people may have only a few symptoms, and some other may have no symptoms at all. Few people may experience worsened symptoms, as worsened shortness of breath and pneumonia, about a week after symptoms begin. People who are older got higher risk of serious illness due to COVID-19, and the risk amplifies with age. People with existing medical conditions might have a higher risk of serious illness. Some medical conditions that may increase the risk of serious illness from COVID-19 include serious heart diseases, cancer and high blood pressure. Delta variant, also called lineage B.1.617.2, is a version of Sars-CoV-2, the virus causes Covid-19. was first detected in India late in year 2020, contains mutations in the gene that codes for the spike protein that the virus uses to enter cells in the human body. Infections seen in people who are fully vaccinated.