Anatomy & Physiology Immune #17


Which is an example of a parasitic infection?


  1. Lice
    • Rationale:

      Some examples of parasitic infections include giardia, lice and maggot infestations, pinworms, tapeworms, and scabies.

  2. Thrush
    • Rationale:

      Thrush is an oral yeast infection caused by fungus, not a parasite.

  3. Plantar warts
    • Rationale:

      Plantar warts are caused by a viral infection, not a parasitic one.

  4. Pneumocystis pneumonia
    • Rationale:

      Pneumocystic pneumonia is a fungal infection that is often seen in individuals with immunocompromise, including HIV and AIDS. It is not caused by a parasite.


Parasites are entities that live off hosts (i.e., organisms) in order to survive.


Learning Outcomes

Some parasites do not noticeably affect their hosts. Others, however, invade, grow and reproduce within their hosts. When this occurs, the individual is diagnosed with a parasitic infection. One example of a parasitic infection is a lice infestation.

Test Taking Tip

Consider each answer choice and ask yourself, “Is this a parasitic infection or another type of infection?” The option that is a parasite is the correct choice for this question.

Video Rationale