Serendipity: the ability or luck to make unexpected discoveries by accident while searching for something else. This is exactly what happened to a group of scientists in the Spanish laboratories of the pharmaceutical company GlaxoSmithKline (GSK). In a study published in Science, researchers led by Dr Janneth Rodriguesscientific leader in the research and development of medicines for global health, have discovered a bacterium that, when fed to mosquitoes, blocks the development of the malaria parasite in the insect’s gut before it even reaches the salivary glands.