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:

Indebtedness To Foreigners

The total amount of money that a country owes to foreign creditors.

Current Consumption

The purchases of goods and services for immediate use, as opposed to saving or investing for future use.

Budget Deficits

The financial situation that occurs when an entity's expenditures exceed its revenues over a specified period of time.

Foreign Exchange Reserves

Assets held on reserve by a central bank in foreign currencies, which are used to back liabilities and influence monetary policy.