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 Why do people develop lifelong immunity only for certain diseases? 

There are some people born with natural strong immunity towards certain diseases. This immunity to them lasts a lifetime. If you have heard of these cases, it does not surprise the medical arena. This article gives you the right briefing about certain diseases affect only once and gives a lifelong immunity against the same diseases.

So, how and why do we develop lifelong immunity? Where exactly does the novel coronavirus put itself amidst all this?



Our body is programmed to develop antibodies when there is an external virus, bacteria or parasite attacking the host. Often known as proteins, we produce these antibodies in response to the infection.

Antibodies act as better defences once they’re formed. They prevent the mutation and hence stop them at once before replicating another cell on the cellular surface. The reason these antibodies prevent the future of any diseases entering your body is by leaving few traces before they wane.

So, the rapid production of these traces is easy if the disease tries to attack your body in our lifetime. In fact, antibodies keep us from getting sick the second time.

Photo by Pragyan Bezbaruah from Pexels

If the diseases re-occur:

There are many cases to date that we have noticed the diseases repeating the second time. If your immune system fails to remember the attack and the protein mutation, there are high chances of these attacking severely. All the more because the immune system is down.


Neither of the above cases:  

There are diseases that do not fit into both the categories, that are because of the high immunity levels that stay longer in your life. Since the diseases affecting the host, don’t mutate rapidly and the immune system can strike back in no time.

A study and in-depth research published that antibodies could last about 200 years and more after measles or a mumps infection.

There are many cases where the anti-bodies do not last a lifetime. In fact, the same study found that it would take more than half the century to lose chickenpox antibodies. Plus, 11 years to lose our tetanus antibodies.

That means that without a booster shot, you could theoretically become infected with one of these diseases as an adult.



Though the researched have found a part of the story as some antibodies last for a longer than a lifetime and some for half the lifetime, they are unsure about why it is the case? There are under study considering various factors into play like genes, mutations, type of diseases and viruses.

How can vaccinations impinge on better circumstances and act upon boosting your immunity? There are many questions that the scientists have concerns over and still are in quest.


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