You Were Sick with the Flu Last Winter

question 38

Multiple Choice

You were sick with the flu last winter. Why then does your doctor suggest you be vaccinated against the flu this year?

• A) The virus blocked your immune systemʹs ability to produce memory cells.
• B) Surviving the flu one year inhibits the immune system the second year.
• C) The virus inactivates helper T cells.
• D) Flu viruses mutate rapidly.

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Definitions:

Assets

Economic resources owned or controlled by an individual or company, expected to provide future benefits.

Currency

A system of money in general use in a particular country.

Russian Rubles

The official currency of the Russian Federation, symbolized as RUB and used for most transactions within the country.

Mariah Carey CD

A physical digital compact disc recording of music by Mariah Carey, an American singer, songwriter, actress, and record producer.