Reduced vaccine efficacy: Experts call for policy revisit
Express News Service NEW DELHI: The latest study indicating that the existing Covid-19 vaccines may have reduced efficacy against the B.1.617…
Double mutant strain of Covid-19 present in Uttarakhand before Mahakumbh 2021
Express News Service DEHRADUN: With the National Centre for Disease Control (NCDC) confirming detection of a total of six cases…