Study in Healthy Adults Challenged With Enterotoxigenic E. Coli, of the Safety, Tolerability and Anti-Diarrheal Activity of VENBETA6890, an Orally Administered, Human Monoclonal IgA

Part A will consist of 1 sentinel dosing group of 2 subjects randomized 1:1 to receive VENBETA6890 and will evaluate VENBETA6890 at dose levels of 15 mg/kg. On Day 1, subjects will receive 15 mg/kg in the morning and a second dose of 15 mg/kg 8 - 12 h later in the outpatient clinic. On Day 2, they will receive a third dose of 15 mg/kg at approximately 8 - 12 h after the last dose on Day 1.

Part A Placebo (saline) will be administered at dose levels of 15 mg/kg. On Day 1, subjects will receive 15 mg/kg in the morning and a second dose of 15 mg/kg 8 - 12 h later in the outpatient clinic. On Day 2, they will receive a third dose of 15 mg/kg at approximately 8 - 12 h after the last dose on Day 1.