The 20-day gap between infections is the shortest known.
The woman, a healthcare worker, first tested positive on December 20 2021, in a PCR test during!--include>…
"According to various studies, immunity against coronavirus developed by vaccination might wane over time. While the younger and healthy sections of the population might have a lower…
(PTI Photo/Manvender Vashist)Kolkata: Several fully vaccinated doctors and health workers have tested Covid positive over the past 10 days in at least three city hospitals, two private and…