It is not uncommon for babies to experience sweating after receiving a vaccine, particularly if they have been given paracetamol (such as Calpol or Crocin). Paracetamol is an antipyretic, meaning it acts on the temperature-regulation center of the brain, which can sometimes result in increased sweating as the body adjusts. To keep your baby comfortable, ensure they are dressed in light, breathable clothing and resting in a cool, well-ventilated area. While this is often a normal reaction, always monitor your baby's overall behavior and contact your pediatrician if you are worried about their temperature or if the sweating is accompanied by other concerning symptoms.