but then a lot of times i m like, well, at least it wasn t in, like, my legs or right hand because i m right-handed, so that would be a lot worse. reporter: if this sounds familiar, you may remember images like this. in the early 1950s, polio caused more than 15,000 cases of paralysis every year in the united states. that is, until a vaccine came along in 1955. no cases of polio have originated in the united states now in nearly 40 years. let me show what afm looks like on an mri scan. you see these bright areas? that represents inflammation of the spinal cord and in the nerves that control the arms. here s the important point. it s likely not the virus causing the paralysis, but rather, the immune system s response to the virus. it s a hit-and-run reaction. while some children never fully recover from afm, liddia has
are never seen again. it is tough stuff. this sum i, it was my honor to meet with two brave young women. joy and liddia, who were kidnapped by boko haram in april of 2014 at the secondary school in nigeria. i was deeply moved by their inspiring stories of courage and resilience and survival. they were really were two amazing young women. i told joy and lydia my administration is committed to combating terrorism and human trafficking and smuggling. in the world today there is more human trafficking than ever has been. they use the internet better than almost anybody is able to use the internet. think of it in a modern world, this world. there is more human trafficking and slavery than at any time in