Even as Africa continues to report decreases in new COVID-19 cases, the Africa Centers for Disease Control and Prevention has urged countries across the continent to scale up testing and vaccination to blunt the arrival of the fourth and fifth waves.Boys run past a mural by Senzart911, of children wearing facemasks amid the coronavirus disease (COVID-19) outbreak, at Soweto's Kliptown, South Africa, Oct 27."The decrease in new cases has stabilized to around 4 percent. We seem to have gon...