1) Have had an organ transplant
2) Are having certain types of cancer treatment
3) Have had blood or bone marrow cancer, such as leukaemia
4) Have a severe lung condition, such as cystic fibrosis, COPD or severe asthma
5) Have a condition that makes you much more likely to get infections
6) Are taking medicine that weakens your immune system
7) Diabetic
8) Are pregnant and have a serious heart condition