A parent brings their 2-month-old infant to the clinic to receive the recommended primary vaccines. Which instruction should the nurse provide the parent about care of the infant after the injections?

A. It is not necessary to keep the infant home from daycare unless the infant has a fever or other signs of illness. B. Applying a cool pack to the injection site can help reduce discomfort and swelling. C. Mild fever after vaccinations is common and not typically serious, but high or persistent fever should be reported. D. Aspirin should not be given to children due to the risk of Reye's syndrome. Acetaminophen or ibuprofen (for infants older than 6 months) are safer alternatives for reducing fever and discomfort.