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What is the most important information I should know about this vaccine?

Hepatitis A and hepatitis B vaccine will not protect you against infection with hepatitis C or E, or other viruses that affect the liver. It will also not protect you from hepatitis if you are already infected with the virus, even if you do not yet show symptoms.

The hepatitis A and hepatitis B vaccine is given in a series of shots. The booster shots are sometimes given 1 month and 6 months after the first shot.

If you have a high risk of hepatitis infection, you may be given 3 shots within 30 days of each other, and a fourth shot 12 months after the first.

Your individual booster schedule may be different from these guidelines. Follow your doctor's instructions or the schedule recommended by the health department of the state you live in.

Vaccination with hepatitis A and hepatitis B is recommended for all adults who are at risk of getting hepatitis A or B. Risk factors include: having more than one sex partner in 6 months; being a homosexual male; having sexual contact with infected people; having cirrhosis or chronic hepatitis C; using intravenous (IV) drugs; being on dialysis or receiving blood transfusions; working in healthcare or public safety and being exposed to infected blood or body fluids; being in the military or traveling to high-risk areas; and living with a person who has either hepatitis A or B infection.

Be sure you receive all recommended doses of this vaccine. If you do not receive the full series of vaccines, you may not be fully protected against the disease.

You can still receive a vaccine if you have a cold or fever. In the case of a more severe illness with a fever or any type of infection, wait until you get better before receiving this vaccine.

Keep track of any and all side effects you have after receiving this vaccine. When you receive a booster dose, you will need to tell the doctor if the previous shots caused any side effects.

Becoming infected with hepatitis A or B is much more dangerous to your health than receiving the vaccine to protect against these diseases. Like any medicine, this vaccine can cause side effects, but the risk of serious side effects is extremely low.

What is hepatitis A and hepatitis B vaccine?

Hepatitis A and B are serious diseases caused by virus.

Hepatitis A is spread through contact with the stool (bowel movements) of a person infected with the hepatitis A virus. This usually occurs by eating food or drinking water that has become contaminated as a result of handling by an infected person.

Hepatitis B is spread through blood or bodily fluids, sexual contact or sharing IV drug needles with an infected person, or during childbirth when a baby is born to a mother who is infected.

Hepatitis causes inflammation of the liver, vomiting, and jaundice (yellowing of the skin or eyes). Hepatitis can lead to liver cancer, cirrhosis, or death.

The hepatitis A and hepatitis B vaccine is used to help prevent these diseases. The vaccine works by exposing you to a small dose of the virus, which causes the body to develop immunity to the disease. This vaccine will not treat an active infection that has already developed in the body.

Vaccination with hepatitis A and hepatitis B is recommended for all adults who are at risk of getting hepatitis A or B. Risk factors include: having more than one sex partner in 6 months; being a homosexual male; having sexual contact with infected people; having cirrhosis or chronic hepatitis C; using intravenous (IV) drugs; being on dialysis or receiving blood transfusions; working in healthcare or public safety and being exposed to infected blood or body fluids; being in the military or traveling to high-risk areas; and living with a person who has either hepatitis A or B infection.

Like any vaccine, the hepatitis A and hepatitis B vaccine may not provide protection from disease in every person.