Cholesterol is a waxy substance that travels in your bloodstream. When you have high cholesterol, it builds up in the walls of your blood vessels. This makes the blood vessels narrower and blood flow decrease. Then you could have a heart attack or a stroke.

Varicella vaccine can prevent varicella. Varicella, also called “chickenpox,” causes an itchy rash that usually lasts about a week. It can also cause fever, tiredness, loss of appetite, and headache.

Tdap vaccine can prevent tetanus, diphtheria, and pertussis. Diphtheria and pertussis spread from person to person. Tetanus enters the body through cuts or wounds.

Td vaccine can prevent tetanus and diphtheria. Tetanus enters the body through cuts or wounds. Diphtheria spreads from person to person.

RSV vaccine can prevent lower respiratory tract disease caused by respiratory syncytial virus (RSV). RSV can cause illness in people of all ages but may be especially serious for infants and older adults.

Rotavirus vaccine can prevent rotavirus disease. Rotavirus commonly causes severe, watery diarrhea, mostly in babies and young children.

Recombinant zoster (shingles) vaccine can prevent shingles. Shingles (also called herpes zoster, or just zoster) is a painful skin rash, usually with blisters.

Rabies is a serious illness that almost always results in death. Certain people at high risk are advised to get the rabies vaccine to help prevent the disease.

Hepatitis A vaccine can prevent hepatitis A. Hepatitis A is a serious liver disease.