emerge that render vaccines less effective. >> and this map shows just how stark those vaccine disparities are. you can see africa almost stands alone. in south africa, just under a quarter of the population is fully vaccinated. that makes it one of the best performers in all of subsaharan africa. and now several of those african nations are being targeted by a new round of travel bans sparked by fears of the omicron variant. it's led to swift backlash from officials and health experts in southern africa. they call the restrictions an overreaction and say they are unlikely to have much of an impact. >> firstly, it's outrageous that, you know, south africa, southern africa is being punished for having good surveillance and ensuring that we wanted to be completely transparent. so this kind of early knee jerk