The covid-19 second wave is surging at a high level and the third wave of coronavirus is inevitable but the time scale is not clear. Everybody has a question in their mind that how the biology of the virus got changed between the first and the second wave of the disease. As per the sources, it is being said the third phase of the pandemic will even have more adaptive pressure on the virus. What medical experts have to say about the rapid spread of the second wave of coronavirus than the first? Watch this video.