<prompt> All the following organisms can cause arthritis exceptWuchereria bancroftiEchinococcus granulosusDracunculus medinensisTrichuris trichiura  <response>: Ans. D. Trichuris trichiuraExplanationWuchereria bancrofti causes lymphatic filariasis and occult filariasis.Occult filariasis results due to hypersensitivity reaction to malarial antigen, classical features of lymphatic filariasis are absent.CF - Arthritis, massive eosinophilia, hepatosplenomegaly, cough, dyspnea, glomerulonephritis, thrombophlebitis, tenosynovitis Panikers Parasitology, p210.Dracunculus medinensis -- It makes a painful papule that enlarges to form blister, local erythema, urticaria, fever, nausea, pruritius.Complications: Sepsis, local abscess, pyogenic arthritis Mandells infectious diseases p no. 3589.Case study reveals a case of monoarthritis caused by Echinococcus granulosus 