Care Insurance
  • Published on 1 Oct, 2025

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    4 min Read

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  • Frequently Asked Questions

  • Q. What is the smallest virus ever discovered?

    The Circovirus is among the smallest viruses, measuring just 17–20 nanometers in diameter, which is significantly smaller than most bacteria.

    Q. Can viruses survive outside a host?

    Some viruses can survive for hours to days on surfaces, depending on temperature, humidity, and the type of surface, but they cannot reproduce without a host.

    Q. Are all viruses harmful to humans?

    No. Most viruses do not infect humans. Many bacteria, plants, or animals infect and play beneficial ecological roles.

    Q. Do viruses exist in extreme environments?

    Yes. Viruses have been discovered in hot springs, the deep ocean, and polar ice, demonstrating their ability to survive in extreme environments.

    Q. How are viruses different from bacteria?

    Viruses are not cells and cannot reproduce independently; in contrast, bacteria are single-celled organisms that can live and reproduce on their own. Additionally, antibiotics kill bacteria but do not affect viruses.

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