Shearer, F. M., Moyes, C. L., Pigott, D. M., Brady, O. J., Marinho, F., Deshpande, A., Longbottom, J., Browne, A. J., Kraemer, M. U. G., O'Reilly, K. M., Hombach, J., Yactayo, S., de Araújo, V. E. M., da Nóbrega, A. A., Mosser, J. F., Stanaway, J. D., Lim, S. S., Hay, S. I., Golding, N., & Reiner, R. C. (n.d.). global yellow fever vaccination coverage from 1970 to 2016: an adjusted retrospective analysis. Lancet infectious diseases, 17(11), 1209–1217. http://access.bl.uk/ark:/81055/vdc_100052191992.0x00001f