A Study To Investigate A Clostridium Difficile Vaccine In Healthy Adults Aged 50 To 85 Years, Who Will Each Receive 3 Doses Of Vaccine.
Conditions
Interventions
- BIOLOGICAL: C. difficile vaccine with adjuvant
- BIOLOGICAL: Placebo
- BIOLOGICAL: C. difficile vaccine with adjuvant
- BIOLOGICAL: placebo
Sponsor
Pfizer