Coeliac disease may sometimes affect your immune system in such a way that you are less able to fight infections. Your doctor may suggest you have vaccinations against such bugs as influenza, pneumococcus and haemophilus influenza type B. Also, if you live/travel in/to areas where there are tropical diseases such as malaria, you may need to take extra care to prevent yourself from catching an infection, eg by taking prophylaxis.
Attribution: BUPA