A parent asked the nurse how to care for their 4-year-old child after receiving the Haemophilus influenzae type b (Hib) conjugate vaccine. Which instruction should the nurse provide?

- A) Any level of fever is not necessarily serious after vaccination. Mild fever is a common side effect and can be monitored at home unless it exceeds 101 degrees Fahrenheit or persists beyond 48 hours. - B) Keeping the child home from daycare is not necessary unless the child develops symptoms that warrant closer observation or care, such as a high fever or behavioral changes. - C) Aspirin should not be given to children due to the risk of Reye's syndrome, a rare but serious condition that can cause swelling in the liver and brain. - D) Applying a cool pack to the injection site is a safe and effective way to reduce discomfort and swelling that may occur after the vaccination.