What will happen in the study?

This study involves a health screening, two study vaccine drinks about a month apart, admission to our extended stay research unit up to 11 days about a month after the second study vaccine drink, and several follow-up visits and phone calls.

Here are some of the things that will happen in this study:

You will:

• Answer questions about your health, past or present illnesses, and medications
• Have a physical exam which includes height, weight and vital signs
• Provide blood, urine and stool samples
• If eligible after screening, receive 2 study vaccine drinks in the outpatient research clinic about a month apart, be admitted to the extended stay research unit up to 11 days about a month after the second study vaccine drink
• Drink a dose of the Shigella germs about a month after the second study vaccine drink to see if the vaccinations protected you from illness. We will be sure the Shigella germs are out of your body before you go home from the extended stay research unit.

During your stay in the extended stay research unit, study staff will be available at all times to care for you.

Adults interested in participating in this study will be given a consent form that thoroughly explains all of the details of the study. A member of the study staff will review the consent form with you and will be sure that all of your questions are answered.