A Patient Is Tested for Antibodies to a Particular Infectious

question 52

Multiple Choice

A patient is tested for antibodies to a particular infectious agent and is found to be positive. What would account for the positive result in this person? 

• A) The person is currently infected with the agent AND the person was previously vaccinated against the agent.
• B) The person was previously vaccinated against the agent.
• C) The person was infected with the agent sometime in the past AND the person is currently infected with the agent.
• D) The person is currently infected with the agent, the person was infected with the agent sometime in the past, OR the person was previously vaccinated against the agent.
• E) The person was previously exposed to the infectious agent OR the person was previously vaccinated against the agent AND the person is currently infected with the agent.

---

Definitions:

Brain Size

Refers to the volume or weight of the brain, often considered in relation to body size among species and associated with various cognitive and neurological functions.

Neanderthals

Neanderthals were an extinct species or subspecies of archaic humans who lived in Eurasia until approximately 40,000 years ago.

Homo Erectus

An extinct species of early human that lived throughout the Pleistocene epoch, known for its upright walking ability.

Brain Size

Refers to the volume or weight of the brain, often correlated with various aspects of intelligence and cognitive abilities in different species.