XBB.1.5 is estimated to account for 74.7 per cent of US Covid-19 cases, up from 65.9 per cent the week prior. BQ.1.1 remains the second most prevalent strain at 15.3 per cent, Xinhua news agency reported.The
XBB.1.5 is estimated to account for 74.7 per cent of US Covid-19 cases, up from 65.9 per cent the week prior. BQ.1.1 remains the second most prevalent strain at 15.3 per cent, Xinhua news agency reported.The
The new approach would simplify vaccination guidance so that, every fall, people would get a new shot, updated to try to match whatever variant is dominant.