Multiple choice

Which organisms carry infection from a sick person to another potential host?

  1. Virus

  2. Bacteria

  3. Host

  4. Vector

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vectors are organisms (like mosquitoes) that transmit pathogens from an infected person to a healthy host without being infected themselves. Viruses and bacteria are the microbes themselves, while hosts are the organisms harboring them.

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