Adults 18-49*

Asthma

5.0 times greater risk

Chronic lung disease

19.1 times greater risk

Chronic heart disease

6.9 times greater risk

Diabetes

4.7 times greater risk

Taking certain medicines that suppress the immune system

16.4 times greater risk

Chronic kidney failure

43.1 times greater risk

Non-functioning spleen (asplenia)

46.8 times greater risk

HIV

27.5 times greater risk

Smoking

6.0 times greater risk

_{*Compared with healthy adults in the same age range.}