KOLKATA: Even as the Covid surge wanes, thousands across the city are being struck by successive bouts of fever and cold within a week sending them scurrying to doctors with renewed fear. Most are testing negative for Covid during the first bout of fever with the symptoms receding in three-four days only to recur in a couple of days, leaving the patients very weak.
Doctors believe this is the result of usual change-of-season spurt in viruses that have spread faster and affected many more this time, possibly due to post-Covid drop in immunity. A non-Covid viral attack, too, can reduce immunity making an individual susceptible to a repeat viral attack which has been happening, they say and warn a second bout could be severe if it turns out to be influenza A, rhinovirus or H1N1, which are now in circulation.
