#COVID_19: BA.4 and BA.5 variants spur 20 per cent rise in cases

COVID-19 cases are on the rise in some 110 countries, driven by the BA.4 and BA.5 variants, said the UN health agency chief on Wednesday, amounting to a 20 per cent spike overall, and a rise in the number of deaths across three of the six world regions monitored by the World Health Organization.