Annual blood smear examination rate is an indicator of -: (A) Disease rate (Prevalence), (B) Operation effciency, (C) % of transmission of malaria, (D) Infectivity rate
Answer is B. Prevalence of malaria can be inspected by annual blood smear examination. REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 21ST EDITION. PAGE NO - 238