TY - JOUR T1 - FDa expands age range for shingles vaccine AU - Voelker R Y1 - 2011/04/20 N1 - 10.1001/jama.2011.495 JO - JAMA SP - 1526 EP - 1526 VL - 305 IS - 15 N2 - The agency based its approval on a multicenter study in the United States and 4 other countries of about 22 000 participants aged 50 to 59 years. Half received the vaccine and half received a placebo. After a year of follow-up, the vaccine reduced the risk of developing shingles by about 70% compared with placebo. SN - 0098-7484 M3 - doi: 10.1001/jama.2011.495 UR - http://dx.doi.org/10.1001/jama.2011.495 ER -