ADDIS ABABA/NAIROBI (Reuters) - COVID-19 cases are accelerating in some parts of Africa and governments should step up preparations for a second wave, the Africa Centres for Disease Control and Prevention said on Thursday. Slideshow ( 5 images )Over the past four week, cases have increased by 45% per week on average in Kenya, by 19% in Democratic Republic of Congo and by 8% in Egypt, the African Union-run organisation’s head John Nkengasong said. “The time to prepare for a second wave is truly now,” he said, urging governments “not to get into prevention fatigue mode.” The continent of 1.3 billion people has so far managed better than widely expected in terms of containing the epidemic, with a lower percentage of deaths than other regions, partly due to strict lockdown measures imposed in March.