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. While fever after vaccination should be monitored, not all fevers after vaccination are serious. Low-grade fevers are common and may not require immediate reporting unless they are persistent or accompanied by other concerning symptoms. B. Children's aspirin should not be given to prevent inflammation after vaccination due to the risk of Reye's syndrome. Acetaminophen or ibuprofen may be recommended for fever or discomfort after vaccination, but not aspirin. C. Applying a cool pack to the injection site can help reduce discomfort and swelling, which are common reactions to vaccines. This is an appropriate instruction for caring for the injection site after receiving the Hib vaccine. D. Keeping the child home from daycare for the next two days is not necessary unless the child experiences unusual symptoms or reactions to the vaccine. Most children can resume normal activities after vaccination.