Who Should Get a Second COVID Booster

on 07 May 2022

Many countries are beginning to offer a second booster dose of the Covid-19 vaccine to vulnerable groups, but some medical professionals are undecided on whether it would benefit the wider population.

So far, the World Health Organization hasn’t given an official recommendation on a second booster dose.

What is a Booster Shot?

A booster shot is another dose of a vaccine that you get months or years after a previous dose. They “boost” your immune system and help your body protect you from the disease.

COVID 19 Second Booster: Who Should Receive It and When?

The current expert opinion is that COVID booster doses restore vaccine effectiveness and it is recommend for vulnerable groups, the U.S. Food and Drug Administration has so far authorized a fourth shot only for those aged 50 and above, as well as those who are immunocompromised.

The below schedule is from U.S. Centers for Disease Control and Prevention.

Pfizer-BioNTech and Moderna

1st Booster: CDC recommends a booster of either Pfizer-BioNTech or Moderna COVID-19 vaccine:

• For most people, at least 5 months after the final dose in the primary series

• For people who are moderately or severely immunocompromised, at least 3 months after the final dose in the primary series 

2nd Booster: People in the following groups can choose to get a 2nd booster of either Pfizer-BioNTech or Moderna COVID-19 vaccine at least 4 months after the 1st booster:

• Adults ages 50 years and older

• People who are moderately or severely immunocompromised.

Johnson & Johnson

1st Booster: CDC recommends a booster of either Pfizer-BioNTech or Moderna COVID-19 vaccine:

• For most people, at least 2 months after the primary dose of J&J/Janssen COVID-19 vaccine

• For people who are moderately or severely immunocompromised, at least 2 months after the additional dose of Pfizer-BioNTech or Moderna COVID-19 vaccine 

2nd Booster: People in the following groups can choose to get a 2nd booster of either Pfizer-BioNTech or Moderna COVID-19 vaccine at least 4 months after the 1st booster:

• Anyone who got a J&J/Janssen COVID-19 vaccine for both their primary dose and booster

• Adults ages 50 years and older

• People who are moderately or severely immunocompromised

Last Updated: 07 May 2022
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