Objective: We investigated whether treatment of atopic dermatitis with pimecrolimus cream 1% in infants affects the development of a normal antibody response to vaccinations.
Methods: In all, 91 patients participated in a 1-year, open-label extension to a 1-year double-blind study: 76 used pimecrolimus twice daily at the first signs or symptoms of the disease until clearance for 2 years and 15 only in the second year. Serum concentrations of antibodies against tetanus, diphtheria, measles, and rubella were measured at months 18 and 24.
Results: The seropositivity rates of 93.6% for tetanus, 88.6% for diphtheria, 88.5% for measles, and 84.4% for rubella were comparable with those reported in literature. Seropositivity was not significantly affected by the use of pimecrolimus at the time of vaccinations (+/- 28 days).
Conclusions: Treatment of atopic dermatitis with pimecrolimus cream 1% in early childhood does not appear to interfere with the development of a normal immune response to vaccinations.