Question:medium

Tetanus bacteria are found in –

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Tetanus bacteria (Clostridium tetani) are everywhere: soil, animal manure, dust, and on contaminated objects like rusty nails. Always clean wounds thoroughly and keep tetanus vaccination up to date (every 10 years).
Updated On: Feb 25, 2026
  • Soil
  • Cowdung
  • Rusty iron
  • All of these
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The Correct Option is D

Solution and Explanation

Tetanus is a serious bacterial infection caused by the bacterium Clostridium tetani. The bacteria are commonly found in a variety of environments and substances that can lead to human infection if entered into open wounds or cuts.

  1. Soil: The Clostridium tetani bacterium is naturally present in soil. The spores can survive for a long time in the soil, especially in areas with animal manure (fertilized soil). Gardening or working in the earth increases the risk of exposure, especially if one has an open wound.
  2. Cowdung: Animal feces, including cowdung, contain the tetanus bacteria. This is because animals often ingest the bacteria or their spores from the ground, and they pass through the digestive system. Handling cowdung can be a risk factor for tetanus when there are untreated cuts or abrasions on the skin.
  3. Rusty iron: While rust itself does not cause tetanus, objects like rusty nails often harbor the bacteria and spores because they are typically exposed to environments where Clostridium tetani thrive, such as soil and organic waste. When someone gets cut with such objects, there's a chance for the bacteria to enter the body.

Given the above explanations, the correct answer to the question "Tetanus bacteria are found in–" is All of these, because Clostridium tetani can be found in soil, cowdung, and on objects like rusty iron.

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