CDC says 4th COVID-19 booster dose may be needed for immunocompromised people


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People with immunocompromising conditions have severe COVID-19. increases the risk of

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The US Centers for Disease Control and Prevention (CDC) said in updated COVID-19 guidelines this week that some immunocompromised people may need a fourth dose of the vaccine.

The agency wrote that people who are over the age of 18, who have already received the mRNA COVID-19 vaccine primary series and may receive an additional mRNA vaccine dose, may receive a single COVID-19 booster dose – Pfizer / BioNTech, Modern or Johnson & Johnson – may be available. At least six months after your third mRNA vaccine dose.


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“In such situations, people who are moderately and severely immunized can receive a total of four COVID-19 vaccine doses,” CDC wrote.

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People who have received two doses of mRNA vaccine and are moderately or severely immunocompromised, more than 28 days after the second dose, should receive an additional mRNA dose immediately six months after a single COVID- 19 Vaccine booster dose should be received. .

People over 18 years of age, moderately and severely immunocompromised and have received a single-dose Johnson & Johnson COVID-19 vaccine primary series, at least two months after receiving a Johnson & Johnson, Pfizer/ BioNTech or Moderna COVID-19 Booster Vaccine. their initial primary dose.

Last week the agency and the US Food and Drug Administration (FDA) approved Americans to mix-and-match COVID-19 Booster Shots, half the dose used for the first two shots with Moderna’s booster.

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“The data currently available today suggest reduced immunity in some populations of fully vaccinated people,” said FDA Acting Commissioner Dr. Janet Woodcock. said in a statement. “The availability of these authorized boosters is critical to continued protection from the COVID-19 disease.”

A third COVID-19 vaccine shot is classified as an “extra dose,” and the CDC recommends an additional mRNA vaccine dose for pregnant people who are moderately to severely immunocompromised and for those who are 12 are older than the age of three and have moderate to severe immunity. a settlement.

People with immunocompromising conditions or people who take immunosuppressive drugs or treatments Increased risk of severe COVID-19. according to CDC, A limited number of studies have shown reduced vaccine effectiveness in immunized participants compared to participants who were not immunized.

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