How do some vaccines require boosters?

Do you think most vaccinations will save you from this disease for life, right? While some vaccines have long-lasting immune system, the body has to give vaccine more than once for a long-term protection. To get complete protection from this disease, this kind of vaccination needs to be given more than once. This additional shot is called a booster.

The immune system needs to create memory cells which should identify the pathogenic enter into the body. To do this, the immune system should look at the immune system at least once and make the necessary antibodies to fight it. Once this happens, the immune system memory cells keep those pathogens in the memory banks, so that they can speak. How fun was it? Immune power is very attractive, is not it?

It is especially common with dead or inactive vaccines. In the case of a slow transition, there is a lot of time to react to immune memory and a booster is not necessary to maintain immunity. And Booster is not necessary. Regular vaccinations that require boosters (require a booster for a non-regular vaccine):

  • MMR
  • Chickenpox
  • HPV
  • Tetanus, diphtheria, and acellular pertussis
  • Influenza

Immunization resembles a simple math problem. Take the vaccine, include it in your body and do not have the risk of catching this disease throughout your life. But often, the vaccine is not that easy. Many vaccines require booster shots after an initial dose to stop the disease. The problem is that many people ignore the need for booster shots in the future.

Why booster shots are needed?

Some diseases are more flexible than others. Over time, the body may lose the antibody being provided by the first vaccine, so that it can again be exposed to the disease. After the initial vaccination, the body sometimes wakes up to prevent disease as a booster shot. Without the reminder by the booster, the regeneration of the disease explodes. The spread of Russian diphtheria in early 1990 is daunting.

During the 1950’s, Diphtheria was an epidemic throughout Russia, in which children had the possibility of getting the disease. In 1958 a vaccine was imposed and the number of cases decreased in five years, until the disease spread to the disease in the 1990’s, the number of cases of Diphtheria in Russia decreased by 30 years. In 1994, 40,000 cases were reported in less than 1,000 cases.

The only difference between the epidemics is that in the 1990s, adults could catch the disease. The only child who had been immunized for decades was less on Diphtheria’s antibody. Diphtheria Vaccine Plans have changed in the outbreak of this future. Continue vaccination of babies, but keep immunity in giving booster shots during adulthood.

Why do some infections need a booster vaccine?

The body remembers how to fight with diseases. That’s why the vaccine works for a long time. There were antibodies to fight the first illness in the body and they could be reproduced. Do you remember that we need to remember the body to fight diseases? It is not exaggerated, because the body uses immune memory to remember to make antibodies and fight against disease.

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But like the rest of the body, this method becomes old and slow. While immune to antibodies, it will take more time to make antibodies in the immune system. If the disease works very fast and antibodies take a lot of time, then lives the pathogenic and you get sick.

When do you need a booster vaccine?

Some diseases are known for their annual booster vaccine. Flu shots are targeted at some influenza strains that year, so a new vaccine is essential for every annual flu season. However, for many other vaccines, booster requirement depends on other details. Before becoming vaccinated or in any area of ​​the world that you do not provide immunity, booster shots may be required.

Booster vaccines may also be needed to travel outside the country. Some diseases that occur in the U.S and some areas in Canada such as polio or typhoid have been abolished, still active in other parts of the world.


So, early immune doses enable immune response in the body so that memory cells are formed. Sometimes it has all the body’s needs. But in some cases, additional vaccination supplements may be required to increase the immune system’s memory from time to time. For the vaccination of those diseases which can progress rapidly or have short-term immunity, vaccine booster dosage is necessary to keep enough memory. Booster dosage is reminiscent of reminding the immune system to remember the antigen (substance known as antibodies to an alien) by renaissance.