Jo Revill has been Health Editor of the Observer for the last 3 years. She has also worked on the Evening Standard as Political Correspondent and also as Health Correspondent as well as the Sunday Times and the Mail on Sunday. She has written extensively on health and environmental issues and worked closely with medical organisations and NGOs such as the World Health Organisation. Jo has initiated and run several campaigns for the Observer, the first being on the subject of childhood obesity and the latest concerning the problems surrounding childbirth. Her first book, Everything You Need to Know about Bird Flu, was published in 2006 to critical acclaim and was serialised in The Times.