Figure 1. Comparison of the molecular characteristics of Clostridioides difficile strain DQ/591 and the epidemic BI/027 strain in study of C. difficile at 2 US Veteran Affairs long-term care facilities and their affiliated acute care facilities. The HindIII REA (A) and PCR ribotype (B) banding patterns were distinct between REA strain DQ/RT591 and REA strain BI/RT027. Molecular weight markers (in kb) are shown adjacent to the REA gel pattern. An internal spiked LIZ 1200 standard was used for fragment length calibrations (in bp) of the PCR ribotype gel patterns. REA, restriction endonuclease analysis.