Influenza vaccine can prevent influenza (flu). Flu is a contagious disease that spreads around the United States every year, usually between October and May. Anyone can get the flu, but it is more dangerous for some people. Infants and young children, people 65 years and older, pregnant people, and people with certain health conditions or a weakened immune system are at greatest risk of flu complications.

Hepatitis A vaccine can prevent hepatitis A. Hepatitis A is a serious liver disease. It is usually spread through close, personal contact with an infected person or when a person unknowingly ingests the virus from objects, food, or drinks that are contaminated by small amounts of stool from an infected person.

Hepatitis B vaccine can prevent hepatitis B. Hepatitis B is a liver disease that can cause mild illness lasting a few weeks, or it can lead to a serious, lifelong illness. Hepatitis B is spread when blood, semen, or other body fluid infected with the hepatitis B virus enters the body of a person who is not infected.

Pneumococcal vaccines can prevent pneumococcal disease. Pneumococcal disease refers to any illness caused by pneumococcal bacteria. These bacteria can cause many types of illnesses, including pneumonia, which is an infection of the lungs. Pneumococcal bacteria are one of the most common causes of pneumonia.

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

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

Shingles (also called herpes zoster, or just zoster) is a painful skin rash, usually with blisters. The most common complication of shingles is long-term nerve pain called postherpetic neuralgia (PHN). It can last for months or years after the rash goes away. The pain from PHN can be severe and debilitating. The lifetime risk of developing shingles is 1 in 3 for people in the US over age 50.