<prompt> According to WHO latest treatment of leprosy is -2 yrs. Or negative slit smear negative which ever is longer for multibacillaryLife long treatmentSix months treatment for paucibacillaryNot specified  <response>: According to WHO, Multibacillary :- MB blisterpacks for 12 months , within 18 months Paucibacillary :-PB Blisterpacks for 6 months ,within 9 months. Reference : Park;s Textbook of preventive and social medicine, 24th edition.Pg no. 341 