Summary: South Africa is battling to contain a mutant strain of COVID-19 that has now been found in more than 30 other countries, including in the U.S., which has prompted a raft of travel bans on South Africa. But across Africa itself, borders remain very much open on a continent that has little hope of getting enough vaccines for years to come. Special correspondent Chris Ocamringa reports. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders
