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?

Chewable children's aspirin will help prevent inflammation.

Any level of fever is serious and should be reported right away.

Keep the child home from daycare for the next two days.

Apply a cool pack to the injection site to reduce discomfort.