All India Institute of Medical Science (AIIMS) Director Dr Randeep Guleria on July 23 said that it can't be predicted how the Covid-19 virus will behave but it seems that it will not mutate so dramatically in the coming months. “As per the serosurvey, there is reasonably good amount of immunity in the population. If for the next few months, untill a larger part of our population gets vaccinated, we should avoid crowd, non essential travel and maintain Covid-appropriate behaviour. With this, I think we can delay and also flatten the third wave,” he said.