<prompt> Chandlers index is associated with: September 2006Round wormHook wormPin wormTape worm  <response>: Ans. B: Hook worm Morbidity and moality from hookworm infection depend much on the worm load. Chandler worked out an index on the basis of an average number of hookworm eggs per gram of feces for the entire community, Chandlers index is still used in epidemiological studies of hookworm disease. By this index, worm loads in different population groups can be compared and also the degree of reduction of egg output after mass treatment. 