Parasites in water - what's behind the outbreak?

Available for over a year

The cryptosporidium parasite has been affecting water supplies in parts of south Devon. Dozens of people have become unwell with sickness and diarrhoea. Residents have been told to boil their drinking water. But what is cryptosporidium and how has it got into people's homes? In this episode of our 5 Questions On podcast, the BBC's Health Editor Hugh Pym speaks to Professor Paul Hunter from the Norwich Medical School, who specialises in microbiology and infectious diseases. (Image: Getty)