Poster prepared by Elizabeth Cook, Lian Thomas, Will de Glanville, Mark Bronsvoort, Phil Toye, Bernard Agwanda, Njeri Wamae, Sam Kariuki and Eric Fèvre for the Medical Research Council (MRC) centenary celebration held at the Royal Society, London, UK, 10 December 2013. The poster won third prize in a competition organized for MRC-funded early-career researchers to communicate how international collaboration has been pivotal to their research. Elizabeth Cook's PhD studentship at the University of Edinburgh is funded by the MRC.