Do you need vaccinations because of an illness or planned treatment? Your doctor can refer you to Travel Clinic Erasmus MC. This may be the case if you:

• are HIV positive.
  HIV suppresses the immune system. This makes you more susceptible to infections. The risk of infections is reduced by giving a number of vaccinations as a preventive measure.
• have an autoimmune disease (such as Crohn's disease, Ulcerative Colitis, Rheumatoid Arthritis, Psoriasis, and SLE).
  In an autoimmune disease, the immune system attacks the body. You will be given immunosuppressant drugs to stop this. The disadvantage is that this makes you more susceptible to infections. To reduce the risk of infections, a number of preventive vaccinations are given before the start of treatment.
• have to or has undergone an organ transplant.
  To prevent rejection of the organ, use anti-defensive drugs. You are therefore more susceptible to infections. The risk of infections is reduced by giving a number of vaccinations as a preventive measure.
• has no or a malfunctioning spleen.
  The spleen provides a good defense against bacteria. Living without a spleen or with a malfunctioning spleen entails an increased risk of (life-threatening) infections. Vaccinations reduce this chance.
• have cancer or a blood disorder.
  Because you have cancer or specific abnormalities in your blood, it may be necessary to get extra vaccinations. In people with sickle cell disease, for example, the function of the spleen is disrupted (this organ has an important function in your immune system). With the pneumococcal vaccination, among other things, you may be spared a serious course of disease. Chemotherapy can suppress your immune system. You may need to receive additional vaccinations.

Your doctor will refer you digitally or provide you with a referral letter to make the appointment yourself.