Who has coined and developed the concept 'Theory of web of causation'?: (A) Mc Mohan and Pugh, (B) Pettenkoffer, (C) John snow, (D) Louis Pasteur
Answer is A. "The web of causation theory was given by MC Mohan and Pugh". It is based upon the epidemiological triad of: Agent Host Environment Ref: Park's Textbook of Preventive and Social Medicine, 20 th edition, Page 32.