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Why Do we Fall Ill — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceWhy Do we Fall Ill1 Mark
MCQ
Transmission of diseases can be _______:
  • A
    Coordinated
  • ✓
    Both $C$ and $D$
  • C
    Direct
  • D
    Indirect
✓

Answer

Correct option: B.
Both $C$ and $D$

The disease can be transmitted directly or indirectly depending on the surrounding factors.
Direct transmission - An infectious agent is transferred from a source to a host by direct contact or droplet spread.
Indirect transmission - It occurs when there is no direct human-to-human contact. This mode of transmission needs a vector to transmit the disease.
Example-
Indirect: - Air, Water, Soil, etc.
Direct: - Handshake, Sexual contact, etc.

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