Can do serologic test for 0157.
Probably adults are asymptomatic.
Cyclospora and Cryptosporidia look same on acid fast. Malaise, headache, low-grade fever. Can do serologic test for 0157 infections. Notes can't clinically distinguish EIEC, Shigella, Samonellae, Campylobacter and Yersinia. For bloody diarrhea, treat Campylobacter or Shigella after a culture is positive.