Africa is in the middle of a full-blown third surge of COVID-19, with cases already near the peak of its first wave, the head of the World Health Organization (WHO) African regional office warned today, as she pressed countries on the continent to step up their public health measures.In other developments — and with much of the world struggling with scarce vaccine supplies — Germany-based CureVac yesterday reported disappointing efficacy findings for its mRNA COVID vaccine.Variants only one factor fueling surgeAt a briefing today, Matshidiso Moeti, MBBS, who leads the WHO's African regional office, said cases rose last week by 20% in 22 African countries, with the Democratic Republic of Congo, Namibia, and Uganda reporting their highest