JOHANNESBURG — Africa’s confirmed coronavirus cases have surpassed 400,000 and deaths have crossed 10,000 as health officials warn the pandemic is picking up speed on the continent of 1.3 billion people.

The Africa Centers for Disease Control and Prevention say confirmed cases are now above 404,000 on the 54-nation continent, while testing capabilities remain low because of shortages of materials.

The new milestones come as some countries loosen their lockdowns and even reopen airports for international flights.

South Africa leads the continent with more than 151,000 confirmed cases. An emerging hot spot is in Gauteng province, containing Johannesburg, with 28% of the country’s cases.