Gastroenteritis at a University in Texas

Mix fresh bulk stool specimens thoroughly with each of two preservatives, 10% formalin and polyvinyl alcohol fixative, at a ratio of one part of stool to 3 parts of preservative. If there is any delay in obtaining the preservatives, refrigerate untreated stool specimens at 4 C for up to 48 hours. For routine microscopy, DO NOT FREEZE. ................
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