An Otherwise Healthy Student in Your Class Was Infected with EBV

question 3

Multiple Choice

An otherwise healthy student in your class was infected with EBV (the virus that causes infectious mononucleosis - commonly referred to as "glandular fever") when she was a child, at which time she had merely experienced a mild sore throat and swollen lymph nodes in her neck. When she is exposed to EBV again later in life, she does not get sick or have any symptoms of mononucleosis.
Which of the following statements explains why your class mate does not exhibit symptoms of EBV infection?

• A) She was likely infected with a weaker strain of EBV during her second exposure.
• B) Complement proteins effectively controlled the EBV during the second infection.
• C) Memory T cells quickly recognised the virus upon the second exposure and destroyed the virally infected cells.
• D) Her innate immune response was better at recognising the EBV antigen during the second infection.

---

Definitions:

Microsoft Edge

A web browser developed by Microsoft, designed to be a faster, safer, and more modern internet experience.

Taskbar

A bar displayed on a computer desktop that shows open applications and provides quick access to certain system functions.

Start Menu

A user interface element in many operating systems that provides a central location for accessing applications, files, and settings.

Previous Pages

Refers to the pages in a document or website that have been viewed or visited before the current page.