ENTERIC MEDIA - PRE-POURED OR IN-HOUSE

Aims-(1) To evaluate the performance of in-house and pre-poured commer cially available enteric agar by challenge with a large number of posi tive clinical specimens. (2) To set the standard (critical independent evaluation) which new products should reach. (3) To publish this info rmation, so that others can make informed decisions about enteric medi a. Methods-Thirteen media of anonymous source were challenged with ''k nown'' positive stool samples. Results-In-house desoxycholate citrate agar performed best for overall pathogen isolation rates, for shigella isolation rates, and for most pathogens available on primary culture. Conclusions-Desoxycholate citrate agar made by our own laboratory yie lded the most pathogens and proved the most effective.