Dorothy H. Crawford is Emeritus Professor of Medical Microbiology at the University of Edinburgh. She is a fellow of the Royal Society of Edinburgh and of the Academy of Medical Sciences. She was awarded an OBE for services to medicine and higher education in 2005. Dorothy is the author of The Invisible Enemy (OUP, 2000); Deadly Companions (OUP, 2007); Virus Hunt (OUP, 2013); and Ebola (OUP, 2016).