Last updated on September 2019

Doctors are evaluating a potential prevention for Clostridium difficile.

Brief description of study

Doctors are evaluating a potential prevention for Clostridium difficile.

Detailed Study Description

C. difficile (C. diff) is one of the most common causes of healthcare-related infections.

C. diff is a type of bacteria that lives in the human intestines and its spores can survive outside of the body for months. These spores are resistant to cleaning and are most commonly transmitted in healthcare settings. People can become infected by touching surfaces that are contaminated or by coming into contact with a healthcare worker that has the bacteria or spores on their hands.

People most at risk of getting sick due to C. diff are those who are taking antibiotics, being treated in a healthcare facility, the elderly and people who are already ill. This infection can cause symptoms that include frequent diarrhea, inflammation of the colon, fever, nausea and abdominal pain; in severe cases it can be life-threatening.

The Clover Study is evaluating an investigational vaccine that may help decrease your chance of getting sick due to C. diff.

Your participation in this study is expected to last between 18 and 42 months and will require 5 office visits within the first 7 months. You will also receive periodic contact from the study team, including regular electronic reminders of your participation and routine telephone calls after 12 months and at the end of the study. Approximately 16,000 patients are expected to participate in the study globally. During the study, you will be given an electronic diary and asked to record any symptoms you might be having. If you have diarrhea 3 or more times within 24 hours, you will be asked to collect a sample of the diarrhea. We will provide a kit for this and arrange for a courier to collect the sample.

You may also have the following assessments during the study period: physical exam, vital signs, urine tests and stool sample(s). All participants will be asked to provide blood samples.

You will be randomly assigned (like the flip of a coin) to receive either the investigational study vaccine or a placebo. This product will be given to you by injection. The placebo looks like the study vaccine, but has no active ingredient in it. You will not know if you are receiving the active vaccine or the placebo.

Clinical Study Identifier: TX152216

Recruitment Status: Closed

Brief Description Eligibility Contact Research Team

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