Why Has It Been Difficult to Make a Vaccine Against

question 31

Multiple Choice

Why has it been difficult to make a vaccine against HIV?

• A) The vaccine is too expensive.
• B) The vaccine is as dangerous to work with as HIV.
• C) The protein coat of an infected cell always looks the same to the immune system.
• D) The HIV virus mutates too quickly for a vaccine to be effective.

---

Definitions:

Personal Property Security Act

Legislation that provides rules for secured transactions involving personal property, ensuring interests are protected and prioritized.

Chattel Security

A type of security interest granting a lender the right to repossess personal property used as collateral if the borrower defaults.

Consumer Goods

Products and services that are purchased for personal or household use.

Collateral

Goods or property used to secure a debt.