MPO and infection: Meanwhile, after controlling for infection with enteroaggregative E. coli (EAEC), heat-labile enterotoxin-producing E. coli (LT-ETEC), heat-stable enterotoxin-producing E. coli (ST-ETEC), Shigella/enteroinvasive E. coli (Shigella/EIEC), both Campylobacter species and Campylobacter jejuni/coli infections were also clearly and consistently associated with increased enteric inflammation as measured by MPO, with a stronger association seen for Campylobacter jejuni/coli (Table 5).