The Epidemiological Triad (Host-Agent-Environment) model was replaced by the Web of Causation model proposed by:
- A John Snow
- B Geoffrey Rose
- C Brian MacMahon ✓
- D Austin Bradford Hill
Correct answer: C. Brian MacMahon
Explanation
The 'Web of Causation' model was proposed by Brian MacMahon (1960) to represent multifactorial causation, where multiple interacting causes contribute to disease in a complex network rather than a simple triad. John Snow pioneered epidemiology in cholera investigations; Geoffrey Rose developed the 'prevention paradox' concept; Bradford Hill proposed criteria for causation.
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.