Definition of measles elimination-: (A) <1\/1000, (B) <1\/10000, (C) <1\/100000, (D) <1\/100
Answer is C. WHO define elimination of measles as the absence of endemic measles for a period of grater than 12 months in the presence of adequate surveillance measles incidence less than 1/100,000 population. REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 21ST EDITION. - 137