You've walked for several hours to get your baby vaccinated. But the clinic has run out of vaccines -- or the healthworker hasn't turned up because his motorcycle broke. These problems are typical along the last mile or so of a vaccine's journey from factory to child in Africa. In this film we hear how Riders for Health are tackling the transport problem. They hope to reach every child, wherever they live and however difficult the journey might be.
Read more in the Nature Outlook: Vaccines.
Animals spared from Marburg virus -- a close relative of Ebola -- even when not treated until three days after infection.
In 2012 Ewen Callaway travelled to Northern Nigeria to learn more about the global polio eradication effort. Nature Video joins him on the search to find one of the virus' last remaining strongholds in remote nomadic communities that the vaccines couldn't reach.
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