‘Explosive diarrhoea’ outbreak remains a mystery as officials struggle to find sources BBCMichigan health officials identify ‘potential source’ of parasite outbreak The Guardian‘Lettuce or Salad Greens’ Identified as Potential Source of Cyclospora Outbreak The New York TimesMichigan says diarrhea outbreak may be linked to lettuce, salad greens as cases rise above 3,000 CNNAn outbreak of diarrhea caused by a parasite has hit thousands of people. Here’s how to stay safe CNN