As cases rise in Africa, the region urgently needs at least 20 million COVID-19 vaccine doses to deliver second doses during the recommended interval to vulnerable groups that have received their first dose, the head of the World Health Organization (WHO) African regional office said today.In other developments, German scientists say they have identified a possible mechanism behind the very rare blood clot complications in some adenovirus vector vaccines.
And Japanese officials are mulling extending the state of emergency for much of the country, coming just 2 months before the Olympic Summer Games start in Tokyo.Africa 'balancing on a knife's edge'At a WHO African regional office briefing today, Matshidiso Moeti, MBBS, the group's