Answer & Explanation:
A nurse should warn a client about the following adverse reactions that can occur after the administration of the influenza vaccine (Fluzone):
- Chills
- Fever
- Muscle aches
These are common side effects of the influenza vaccine and are generally mild and temporary. It is important for the nurse to inform the client about these potential reactions so they are aware and can take appropriate measures if needed, such as taking over-the-counter pain relievers or applying cold compresses. Lethargy, on the other hand, is not typically listed as a common adverse reaction to the influenza vaccine. However, it is always recommended to consult with a healthcare professional for specific guidance and information regarding potential adverse reactions to any vaccine.