Hepatitis A Vaccine Side Effects

If you are here to find out what hepatitis A vaccine side effects are, then welcome to this post. We are not only going to reveal to you the side effects of hepatitis A vaccine but we will educate you on all you need to know about the vaccine and the disease.

hepatitis A vaccine side effects are almost negligible when compared to the benefits of getting vacinated

Under the vaccine section, we will be looking at what really is hepatitis A vaccine, who is it meant for and who it is not meant for. Also, we will be looking at how to administer it, and lastly the side effects and how long they may last.

While under the diseases section, we will be considering what is hepatitis A and the causes of the disease. We will equally consider the symptoms, preventions, and treatment.


According to the Encarta dictionary, a vaccine can be defined as a preparation containing weakened or microbes of the kind that cause disease, administered to stimulate the immune system to produce antibodies against that disease.

In other words, a vaccine serves as a guard against diseases. Therefore, Hepatitis A vaccine is a preparation that is given to individuals in order to prevent hepatitis A virus from attacking them.

Some hepatitis A vaccine contains inactivated virus while some contain a weakened virus. And this is where hep A vaccine side effects lies sometimes.

Research has shown that hepatitis A vaccine is about 95% efficient and can last up to 15 years and possibly a person’s entire life span.

Medically, only two doses of hepatitis A vaccine is recommended for any living being. The first being immediately after the age of one, and the second when grown to an adult.

Hepatitis A Vaccine For Who?

According to the US center for disease and control and prevention, Hepatitis A vaccine must be administered to all children over one year old.

So, if you are a mother or a father and have a child that is above 1 year that has not been vaccinated against hepatitis A, then do that now.

In addition, if you are having difficulty in your sexual life, suffering from chronic liver disease or have been treated with clotting factor concentrates then you need this vaccine

Also, if you are working closely with the virus, or living in area or community where there is an outbreak then you need this vaccine

Another group of people that must take this vaccine are travelers more especially if traveling to areas with frequent cases of hepatitis A.

This virus is common in Africa, Indian, Central America, South America, far East, and Eastern Europe. So, if you have a plan of visiting any of these areas then make sure you are vaccinated against hepatitis A.

Hepatitis A Vaccine – Who is it Not For?

As earlier stated, some hepatitis A vaccine contains inactivated virus while some contain a weakened virus. With that in mind, pregnant women and those with poor immune function should avoid hep A vaccine with a weakened virus.

Therefore, if you are a pregnant woman or you perceive having a weak or poor immune function then consult your doctor before taking it.

If you have previous life-threatening allergies after taking other types of vaccine(s) then tell your doctor before taking Hep A vaccine.

Never take this vaccine when you are seriously sick. Always wait until you are very fit.

Hepatitis A Vaccine- How to Administer it?

We are still on hepatitis A vaccine side effects or hep A vaccine side effect, but yet to be there. This means we are gradually getting to the point where you will understand the side effects of the vaccine.

As an adult two doses of this vaccine should be given to you in the muscle of your upper arm. After you have the first dose, you are expected to go for the second one 6 to 12 months later. And this will last all the days of your life here on earth

Hepatitis A Vaccine Side Effects

Here we will not only discuss Hepatitis A vaccine side effects, but we will also discuss how long it may last. So if you are among those asking, how long do Hep A vaccine side effects last or hepatitis A vaccine side effects how long do the last?

Sit back to get the real answer to your question. As to many vaccines, hepatitis A vaccine has its side effects. One good thing is that no report of a fatal side effect has been recorded so far.

Some of the Hepatitis A vaccine side effects are:

  • High fever
  • Behavior changes
  • Difficult to breathe
  • Hoarseness
  • Hives
  • Paleness
  • Weakness
  • Fast heartbeat
  • Dizziness

These side effects listed above could be severe sometimes. The minor Hep A vaccine side effects are:

  • Headache
  • Fatigue

Some of these hepatitis A vaccine side effects can last for just a few hours. While some will last for days. As a rule of thumb, if any of these mentioned above continues after 3 days then consult your doctor.

Hepatitis A Virus

Hepatitis A disease is caused by Hepatovirus A and it is a very infectious disease. This means the virus can easily be transferred from one person to another. The virus basically attacks the liver, which is why in most cases the symptoms are not easily identified.

Research has shown that for those that developed the symptoms and the time of infection is between two and six weeks.

The symptoms of hepatitis A virus infection are nausea, vomiting, diarrhea, jaundice, fever, and abdominal pains. Reports also show that these symptoms can come back six months after treating it in about 10 to 15% of the patients. Hepatitis A virus can cause acute liver failure mostly on the elderly ones.

Hepatitis A Disease – Spreading Agents

Hep A is infectious, which means it can easily be transferred from one person to another. This virus can only spread through eating or drinking food and water that is contaminated with feces.

Also, it spreads through eating shellfish, which is not well-cooked. Another way of spreading this virus is through coming into contact with an infected person.

Hepatitis A Diseases – Treatment

So far, there is no established treatment for hepatitis A disease. Patients are placed under the medical condition that helps in recovery from the symptoms. Therefore, the only true solution to it is to embark on the vaccine.

Though the vaccine has some side effects, its gain far outweighs the side effects because it will total prevent you from suffering from hepatitis A disease.

Hepatitis A Vaccine Side Effects – Wrap Up

This post does not in any way substitute your visit to the doctor. If you have any of the symptoms mentioned above then quickly visit your doctor.

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