Clostridioides difficile (C. difficile) is a bacterium (germ) that can spread from one person to another causing severe diarrhea (watery poop) that at its worst can lead to death. Pfizer has been studying an investigational vaccine to prevent diarrhea caused by C. difficile. To be part of this study you must be 65 years old or older and have one or more of…
The purpose of this study is to find out if the mitral valve can be safely replaced using a procedure that issimpler than the open-heart procedure being used today and may be safer for patients who are at ahigher risk from conventional open-heart surgery. The device being studied would be implanted without the need for an open-heart procedure and without…