has role immunizes recipient immunizes against pathogen Escherichia coli Homo sapiens Inactivated ETEC expressing CFA/I and CFA/II vaccine Oliver He Inactivated ETEC expressing CFA/I and CFA/II VIOLIN: https://violinet.org/vaxquery/vaccine_detail.php?c_vaccine_id=286 PMID:1612730 286 vaccine inactivated E. coli vaccine inactivated vaccine role