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How Long Does Immunity Last After COVID-19 Vaccination?

Importance of COVID-19 Vaccination

Why is COVID Vaccine Important?

Today, when India faces a catastrophic outbreak like COVID-19, the role of vaccines in bringing down the spread is crucial. Doctors are staunchly emphasizing that everyone gets inoculated to raise guard against this deadly infection.

As numerous people are getting vaccinated, many questions are arising in our minds. One of them is how long before the vaccine starts safeguarding us from the COVID-19 virus. Studies show that those who contracted the virus after getting the covid vaccine dose did not experience a severe form of this disease. So, Covishield or Covaxin may not prevent the disease, but it effectively lessens the magnitude of COVID-19. 

Also, it is tremendously crucial, you receive both the covid vaccine shots to ensure long-lasting immunity.

Do not panic if you experience a mild reaction like body ache, fever, or rashes post-vaccination. It is a common phenomenon after any vaccination and happens because your immune system responds to the vaccine. You should not feel any anxiousness in going for the second dose.

Immunity After First Dose of Vaccine?

After 1st dose of COVID-19 Vaccination

A lot of hue and cry has been going on about the inadequate COVID-19 vaccine availability. People who have received the first dose are worried because this shortage has delayed their second dose.

Doctors say that your immunity develops 2-3 weeks after the first dose and the second dose improves the duration of your immunity. Scientists and medical researchers are yet to establish the longevity that this vaccine provides.

Amidst this uncertainty, recently, the government extended the gap between the doses of the Covishield vaccine, which led to a lot of concern.

According to the latest research, the delay in getting the second shot of the COVID-19 vaccine gives your body more time to respond to the first dose. Once you receive the first shot, it prepares your body’s immune system to produce the protective antibodies against the COVID-19 virus. The research further states that levels of antibodies produced are elevated from 20 percent to 300 percent when the follow-up vaccine comes later. The efficiency of the vaccine elevates if given 12 weeks apart. So, the extended time you give your body, the better your body is geared up for the final shot.

So, if you miss the second dose on the scheduled day, do not worry. However, if you do not get the final shot within 12 months, you will have to start again by taking the first covid vaccine dose and then the subsequent shot.

To check your immunity post-vaccination, you can also go for SRL’s Spike Antibody Test. It lets you know your exact antibody levels against the SARS-CoV-2 virus.

Are There Any Drawbacks of This Delay?

The suggested time period between the two shots comes as a reassurance, given the shortage of vaccines that our country is facing.

At the same time, there are drawbacks too, such as:

  • Although the immunity after the first dose of Covishield is high, it cannot protect you from the virus unless you get both covid vaccine shots
  • The longer the gap between both doses, the longer it will take to protect everyone.
  • The interval is particularly dangerous when we hear about more transmissible variants that are spreading.
  • Since you are not immunized, you can still get infected and affect the people around you.


Scientists are still working to find out how long the COVID-19 vaccines ensure your immunity. But that does not lessen the cruciality of the vaccines. With the pandemic still out there, experts highly recommend getting the covid vaccine shots soon as possible. It will not only keep you protected from COVID-19 but also might help keep the latest variants of the virus at bay.

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