www.travelpharm.com check out antimalarial drugs and everything you want to know to protect your health abroad.
www.autan.co.uk interactive "World Bite" map - info on bugs and diseases.
www.masta.org medical advice service for traveller abroad - information about vaccinations and staying well when travelling.
www.iamat.org International Association of Medical Assistance for Travellers. Advice on health risks, immunizations, requirements and diseases etc. worldwide.