Question
After receiving the second dose of the Hepatitis B vaccine, a full-month-old baby showed signs of loss of appetite and lack of energy. Is this a normal phenomenon?
Answer
Such symptoms are typically a normal response to the vaccine and usually resolve on their own within 1 to 2 days. It is recommended that parents monitor the baby’s temperature, and if it exceeds 38.5 degrees Celsius, they should seek medical attention promptly.