“…Only aluminum, oil emulsions, and calcium have been tested as adjuvants with IPV in human studies. However, many of these human studies contained no control group [15, 26, 32], assessed safety but not immunogenicity [32], occurred prior to the development of enhanced IPV [15, 26, 31, 32], or had somewhat conflicting results [19, 20, 21]. Further, these studies focus on serologic antibody titers, though an important indicator of community IPV protectivity lies in mucosal immunity.…”