Africa sees ‘extremely rapid evolution’ of pandemic, UN says

  • A man sprays disinfectant to sanitize a public bus against the spread of the new coronavirus, in downtown Nairobi, Kenya Thursday, March 19, 2020. For most people, the new coronavirus causes only mild or moderate symptoms such as fever and cough and the vast majority recover in 2-6 weeks but for some, especially older adults and people with existing health issues, the virus that causes COVID-19 can result in more severe illness, including pneumonia. (AP Photo)

JOHANNESBURG — More African countries closed their borders Thursday as the coronavirus’ local spread threatened to turn the continent of 1.3 billion people into an alarming new front for the pandemic.