California Registered Dental Assistant (RDA) Written Practice Exam

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Which of the following modes of disease transmission best describes a human bite?

Contact
Droplet
Parenteral
Vector-borne

The correct answer is: Parenteral

A human bite falls under the category of parenteral mode of disease transmission. Parenteral transmission refers to the transfer of pathogens through some sort of break in the skin, such as a bite, cut, or puncture. Contact transmission is when pathogens are passed through direct or indirect contact with a contaminated surface. Droplet transmission occurs through respiratory droplets, such as sneezing or coughing. Vector-borne transmission is when an insect or animal acts as a carrier for the pathogen. While a human bite can potentially lead to contact with bodily fluids or saliva, the main mode of transmission is through a puncture wound, making it parenteral. So, the correct answer is C.