What good are vaccines if they never reach the people who need them? For millions of Africans living in rural villages far from medical facilities, isolation can lead to disease and death. In this original GOOD video we look at Riders for Health, a U.K.-based organization that uses high-speed off-road motorcycles to bring medical help to remote villages in Nigeria, Zimbabwe and The Gambia. Go to http://www.goodmagazine.com/ for more.