Professor Thomas Clasen
JD MSc PhD
of Water, Sanitation and Health
After obtaining a JD from Georgetown University in 1981, I joined Foley & Lardner, a 1000+ lawyer US firm where I was responsible for international business transactions, becoming a partner in 1987. In 1994 I left the firm to become Vice President, General Counsel and a Director of Everett Smith Group, Ltd., a US$1 billion conglomerate.
My interest in waterborne disease arose from investments in point-of-use water treatment technologies (Exstream and First Water). I received my MSc (Control of Infectious Diseases) and PhD (Prevention of Waterborne Disease) from the University of London, and joined the faculty at LSHTM in 2004.
Epidemiology and Control of Infectious Diseases (ID301); Water and Sanitation (ID201). Formerly, Adjunct Professor, School of Law, University of Wisconsin, Madison, Wisconsin, USA. Adjunct Professor, Graduate School of Business, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA.
My publications include randomized controlled field trials to assess the health impact of water, sanitation and hygiene interventions, systematic reviews of water quality and sanitation interventions to prevent diarrhoeal disease and enteric infection, assessments of water and sanitation interventions in emergency and outbreak response, and cost and cost-effectiveness analyses of water and sanitation interventions in developing countries. My current research includes a large-scale cluster-randomized trial to assess the impact of rural sanitation on diarrhoea, anthropometrics and helminth infection; a systematic review and field study to compare the health impact of shared sanitation with individual household latrines; field studies to assess and develop interventions to improve the collection and disposal of child faeces; a blinded, randomized controlled field trial of chlorine tablets in India; and a health impact evaluation of a large-scale deployment of water filters and improved cook-stoves in Rwanda; and providing advice on sanitation and water treatment to a large scale trial in Kenya and Bangladesh.