A parent reports the child has fever 103°F the day after MMR vaccination. What should the clinician do?

A parent reports the child has fever 103°F the day after MMR vaccination. What should the clinician do?

• A. Reassure the parent that fever can occur with the MMR vaccine.
• B. File a VAERS adverse event report immediately.
• C. Take the child to the emergency department.
• D. Administer aspirin to reduce fever.

Answer: (A)

Fever after vaccination is a common, usually mild reaction that reflects the body's immune response to the vaccine. The MMR vaccine is a live attenuated vaccine, and fever can occur as the immune system responds, typically within a few days to about a week after vaccination. A fever of 103°F the day after vaccination can be seen as a vaccine-related fever and is generally self-limiting. The best approach is to reassure the parent and provide supportive care rather than more aggressive interventions. Encourage fluids and rest, and treat discomfort or fever with age-appropriate acetaminophen. Ibuprofen can be considered if the child is already past six months of age, but aspirin should be avoided in children due to the risk of Reye syndrome. Monitor for warning signs that would require reevaluation, such as fever that lasts beyond a few days, fever accompanied by lethargy, dehydration, poor intake, persistent vomiting, severe headache with neck stiffness, or any seizures. If any of these occur, return for clinical assessment. Reporting to VAERS is generally reserved for more serious or unexpected adverse events; a common fever after vaccination does not automatically require immediate VAERS reporting, though educators or clinicians can report if there are concerning or unexplained symptoms.

Fever after vaccination is a common, usually mild reaction that reflects the body's immune response to the vaccine. The MMR vaccine is a live attenuated vaccine, and fever can occur as the immune system responds, typically within a few days to about a week after vaccination.

A fever of 103°F the day after vaccination can be seen as a vaccine-related fever and is generally self-limiting. The best approach is to reassure the parent and provide supportive care rather than more aggressive interventions. Encourage fluids and rest, and treat discomfort or fever with age-appropriate acetaminophen. Ibuprofen can be considered if the child is already past six months of age, but aspirin should be avoided in children due to the risk of Reye syndrome.

Monitor for warning signs that would require reevaluation, such as fever that lasts beyond a few days, fever accompanied by lethargy, dehydration, poor intake, persistent vomiting, severe headache with neck stiffness, or any seizures. If any of these occur, return for clinical assessment.

Reporting to VAERS is generally reserved for more serious or unexpected adverse events; a common fever after vaccination does not automatically require immediate VAERS reporting, though educators or clinicians can report if there are concerning or unexplained symptoms.