I en placebokontrolleret, dobbeltblindet undersøgelse fik 98 voksne patienter på eller over 60 år en booster- dosis af ZOSTAVAX 42 dage efter den første dosis.
In a placebo-controlled, double-blind, study, 98 adults 60 years of age or older received a second dose of ZOSTAVAX 42 days following the initial dose; the vaccine was generally well tolerated.