<qa>  What vaccine is used for shingles or chickenpox?- Subjects must agree not to take live attenuated vaccines including seasonal nasal flu vaccine, varicella vaccine for shingles or chickenpox, MMR or MMRV, oral polio vaccine and vaccines for yellow fever, measles, mumps or rubella thirty 30 days before the Screening Visit, throughout the duration of the trial and for sixty 60 days following the subjects last dose of study drug 