Text this: Efficacy Evaluation of an Intradermally Delivered Enterotoxigenic <i>Escherichia coli</i> CF Antigen I Fimbrial Tip Adhesin Vaccine Coadministered with Heat-Labile Enterotoxin with LT(R192G) against Experimental Challenge with Enterotoxigenic <i>E. coli</i> H10407 in Healthy Adult Volunteers