<p>Concomitant Administration with Other Vaccines: In a randomized clinical study, a reduced immune response to ZOSTAVAX as measured by gpELISA was observed in individuals who received concurrent administration of Pneumococcal Vaccine and ZOSTAVAX compared with individuals who received these vaccines 4 weeks apart. Consider administration of the two vaccines separated by at least 4 weeks. Limited safety and immunogenicity data from clinical trials are available on the concurrent administration of Pneumococcal Vaccine and vaccines other than ZOSTAVAX.</p>