Cyclospora sp. oocysts sporulated maximally at 22 and 30 degrees C, ir
respective of whether they were stored in deionized water or potassium
dichromate. Storage at either 4 or 37 degrees C for 14 days retarded
sporulation. Up to 12% of human- and baboon-derived oocysts previously
stored at 4 degrees C for 1 to 2 months sporulated when stored for 6
to 7 days at 30 degrees C.