Nutrition · Health Education
Identify the CORRECT statements regarding Communicable Diseases and their control: (A) The 'Chain of Infection' includes agent, reservoir, portal of exit, mode of transmission, portal of entry and susceptible host. (B) Herd immunity is achieved when a sufficiently large proportion of the population becomes immune, reducing disease spread. (C) BCG vaccine provides immunity against Cholera. (D) The incubation period of Tuberculosis (TB) can range from weeks to months or even years.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A and B only
- 2A, C and D only
- 3A, B and D only✓
- 4B, C and D only
Correct answer
A, B and D only
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