This week global health leaders assessed progress towards vaccination for all children, and concluded that the world is behind schedule. The plight of children in Yemen, left at risk of polio due to conflict, was also brought to the fore, while a vaccination campaign to contain cholera was organised in South Sudan.

New guides were released to help countries sustainably finance immunisation were released, and we were reminded once again of the economic value of investing in vaccination.

NPR explored the additional hurdles faced by Zika vaccines, as well as the literal bat caves where the next pandemic could originate.

Finally, concerns around the anti-vaccination movement in the US continued, and in the Twittersphere, a GIF showing the power of herd immunity got people talking.