<prompt> Concentration of diethylcarbomazine in DEC medicated salt in endemic filariasis is -2-4 gmkg3-6 gmkg5-10 gmkg10-15 gmkg  <response>: DEC Medicated salt:- The use of DEC medicated salt is a special form of mass treatment using very low doses of the drug over a long period of time. Common salt medicated with 1-4 g of DEC per kg has been used for filariasis control in endemic areas of W.bancrofti and B.malayi . Treatment should be continue for 6-9 months Reference: park;s textbook of preventive and social medicine, 23rd edition, pg no.274 