Why Are New Flu Shots Necessary Every Year

question 17

Multiple Choice

Why are new flu shots necessary every year?

• A) Flu viruses have a high mutation rate.
• B) Depending on the year, either bacteria or viruses cause the flu.
• C) The antiviral chemicals in flu shots last only 11 months.
• D) Flu shots do not result in the production of memory cells.

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Definitions:

UPS

Uninterruptible Power Supply, a battery backup that provides emergency power to a load when the input power source or mains power fails.

ESD Strip

A strip used to prevent electrostatic discharge (ESD) by grounding the user, protecting sensitive electronic components.

Voltage Potential

A measure of the electric potential energy per unit charge at a point in a field, often simplifying to 'voltage.'

Monochrome Laser Printer

A type of printer that uses laser technology to produce high-quality text and graphics in black and white.