Fig 2.

Comparison of culture and EIA results with PCR as an arbitrator test. On 20 April 2012, EIA testing was replaced by culture to report patient results. All stool samples received between 16 and 27 April were collected and batch tested via EIA. All positive culture or EIA specimens and a random sampling of samples negative for both culture and EIA were sent to the Wadsworth Center for verification via PCR. Four FP and 1 FN were observed. Colored bars represent testing performed: red bars represent a negative test result (or outpatient for location), green represents a positive result (or inpatient for location), while a white box represents test not performed. *, pediatric patients.