ADDIS ABABA, May 12 (Xinhua) -- African countries have conducted 106,153,922 COVID-19 tests so far, the Africa Centers for Disease Control and Prevention (Africa CDC) said in the latest weekly briefing held Thursday.
The Africa CDC, the specialized healthcare agency of the African Union, said 506,623 new tests were reported during the past one week, representing a 13 percent increase from the previous week when 450,303 tests were reported.
"The cumulative positivity rate is 11 percent and the test per case ratio is 9.2 percent," the agency said in the report.
Five countries, namely South Africa, Morocco, Tunisia, Libya and Egypt account for about 60 percent of all COVID-19 cases reported in Africa.
In terms of the caseload, southern Africa is the most affected region, followed by the northern and eastern parts of the continent, while central Africa is the least affected region in the continent, according to the Africa CDC.