Every Year the Common Flu Vaccine Is Designed to Protect

question 10

Multiple Choice

Every year the common 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 virus develops resistance to the vaccine
• C)Because the virus can mutate into new strains
• D)Because people change their habits each year and become susceptible to different strains of the virus
• E)Because the common influenza virus can come from many species of animals including cats and dogs

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Definitions:

Credit Sale

A transaction where goods or services are provided to a customer with the agreement that payment will be made at a future date.

Return

The income generated from an investment, or the act of returning goods to the seller for a refund or exchange.

Terms

Conditions and agreements under which something is provided or is to be provided, detailing the rate, quantity, and period.

Perpetual Inventory System

An accounting system that continuously records the quantities and values of inventory on hand and sold, updating records in real-time.