Question
My baby had a fever of up to 38.3℃ after receiving the 13-valent pneumococcal vaccine yesterday. This morning, the fever has gone, but last night, he kept tilting his head back. What could be the reason?
Answer
Some babies may experience a slight fever on the night of vaccination or 1-2 days later, sometimes even developing a fever or cold. This is an adverse reaction when the vaccine interacts with the body’s immune system again. The fever is usually below 38.5℃ and lasts for 1-2 days. The baby’s ability to fight off diseases will increase during this time, so it is important to give the baby plenty of water and ensure adequate rest.