This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable Diseases, Subject name: Social & Preventive Medicine
Due to epidemiological reasons chemoprophylaxis is most impractical in the control of: 
Select and explain. 
A. Measles, B. Cholera, C. Diphtheria, D. Tuberculosis
D: Tuberculosis
Answer: D: Tuberculosis 
Explanation: Ans. d (Tuberculosis). (Ref. Park, Textbook of PSM, 17th ed., 100)INDICATIONS FOR CHEMOPROPHYLAXIS DiseaseChemoprophylaxis1.Bacterial conjunctivitisErythromycin ointment2.DiphtheriaErythromycin and 1st dose vaccine3.InfluenzaAmantadine4.MalariaChloroquine 300 mg/wkProguanil 200 mg/wkMefloquine 250 mg/wkDoxycycline 100 mg/day5.Meningococcal meningitisSulphadiazine6.PlagueTetracycline7.CholeraTetracycline or furazolidine