Every Year the Flu Vaccine Is Designed to Protect Against

question 19

Multiple Choice

Every year the flu vaccine is designed to protect against three different strains of the influenza virus.Why do scientists typically have to make a new vaccine every year?

• A) because our bodies develop resistance to the vaccine and it becomes less effective
• B) because the viruses develop resistance to the vaccine
• C) because the viruses can mutate into new strains
• D) because people change their habits each year and become susceptible to different strains of the virus
• E) because a vaccine breaks down after one year

---

Definitions:

Constitution

A fundamental set of principles and precedents by which a state or other organization is governed, often codified as a written document that lays out the structure and powers of the government.

Roe V. Wade

A significant 1973 Supreme Court decision that recognized a woman's right to choose an abortion under certain conditions, based on privacy rights.

Abortions

The medical termination of a pregnancy before the fetus is capable of independent life.

Third Trimester

The final stage of pregnancy, extending from approximately the 28th week until birth.