He addresses polio right now and how we are close to solving the problem. Smallpox is the only disease that has been eradicated. He uses India as an example on where vaccines are being distributed to children for polio. He states we need to keep vaccinating otherwise the disease will slowly make its way back.
Vaccines were also the topic for Melinda and Bill Gates this year at the World Economic Convention and you can see more at the link below with an interview done at the convention talking about the commitment of the UK joining in. BD