Head, Rheumatology Department, All India Institute of Medical Sciences New Delhi&nbsp; Prof. Dr.Uma Kumar, says, even those who have once been infected with Coronavirus must protect themselves with&nbsp; masking, sanitisation and physical distancing as they can catch infection again.<br />”&nbsp;<br />”<span style="color: #222222;">Talking to AIR News, Prof.Kumar said all of us have to religiously follow these steps till a cure is found.&nbsp;</span><br />