X0203 3 2009-11-03 1 0000310158 Merck & Co. Inc. MRK 0001144773 THIER SAMUEL O MD HARVARD MEDICAL SCHOOL, MA GENERAL HOSPI 55 FRUIT STREET, BULFINCH 370 BOSTON MA 02114 1 No securities are beneficially owned, thierpoa.TXT Debra A. Bollwage as Attorney-in-Fact for Samuel O. Thier 2009-11-04