Tag: Covid vaccine efficacy

New Delhi: It’s not a wave – thankfully. But it’s a warning. Two new Covid subvariants, NB.1.8.1 and LF.7, both from Omicron lineage, are quietly making the rounds, a reminder that the virus never truly left us. Cases have jumped from 257 to 1,010 in just a week, with Kerala and Maharashtra accounting for the…