Giardia is a parasite that is swallowed and goes through the intestinal tract, causing diarrhea. This can be found in water sources like lakes, pools, or streams, and from unwashed hands touching food ...

Harmful algal blooms are not all the same. That's true even of the blooms within northwest Ohio, where researchers have long known that the strain of cyanobacteria that typically dominates blooms in ...

A traveller fell seriously ill with chronic diarrhoea and weight loss after drinking unfiltered well water. A gastroenterologist warns that even clear, “natural” water sources can harbour parasites ...