warrior and founder and director of health justice initiative in south africa. welcome. i know you have been critical of the travel bans put in place by many in the country, including the united states, towards people coming out of south africa. is it not fair as a way of trying to prevent the vaccine spread, even though it is obviously not going to work perfectly, but isn't it fair to in some way try to stop the spread? how do you think about it? >> they don't think it's fair because the way in which it's being imposed is quite uneven and a lot of responses in the last few days really smacked in a very knee-jerk way of dealing with this pandemic. it goes against the solidarity promised to us at the beginning of this pandemic. if you see some of the responses from countries like canada as well as uk and also the u.s. in