Multiple choice

What is the organism that carries infection from a sick person to a healthy person called?

  1. Virus

  2. Bacteria

  3. Host

  4. Vector

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

Disease-causing organisms, i.e. causative agents are transferred from a diseased person to a healthy person by an organism which itself does not get the disease. Such an agent is called “vector”.