To your good health!

The article focuses on the causes of and prevention from water borne diseases in the developed world. Epidemiologist Floyd Frost points out that where water is drawn from surface sources such as rivers or lakes, which are prone to low-level cryptosporidium contamination from livestock faeces via water run-off, people are less likely to experience full-blown cryptosporidiosis if the water supply becomes seriously contaminated than in places where they drink groundwater, which tends not to contain the pathogen. To confirm that a stronger immune response really does protect against diarrhoeal illness, Frost teamed up with Rebecca Calderon, a microbiologist with the U.S. Environmental Protection Agency, Gunther Craun from Gunther Craun Associates in Staunton, Virginia, and researchers at the University of New Mexico in Albuquerque. INSET: Trouble on tap.