[Cyclospora in 2 Mexican children].

We report two patients, one symptomatic and another asymptomatic, infected with Cyclospora an enteropathogen recently described. The symptoms were: abdominal pain, hiporexia, vomit, bruxism, watery diarrhea 3 or 4 times in a day but self-limiting after 24 to 72 hours. In both children there were unsporulated oocysts with a diameter of 8.44 +/- 0.146 microns detected in feces concentrated by Faust's technique; the confirmation was achieved with a Ziehl-Neelsen stain and the observation of sporulated oocysts (two sporocysts per oocyst). In Mexico, Cyclospora is perhaps overlooked or it is mistaken with oocysts of Cryptosporidium.