Edited excerpts from an interview:The covid-19 pandemic is evolving continuously. What is the situation in India, where the number of cases has crossed 1 million and deaths have crossed 25,000?Covid-19, which is caused by SARS CoV-2 virus, is a multidimensional problem.
Little is known about the behaviour of this virus and its transmission. The world over, communities are still researching it.
While there is now partial clarity about the pathways of its transmission, its impact on different organs, persistence of antibodies generated by the body against the virus, its virulence and mutations over time remain important questions.