By Sarah Osman
The American Center for Disease Control and Prevention (CDC) confirmed that people with health conditions that lead to moderate or severe weakening of immunity may need a fourth dose of the Corona virus vaccine. The CDC allowed a third dose for some immunocompromised people age 18 and older last August.
This third dose was necessary because the immunocompromised may not have had a full immune response from the first two doses.
A previous study from Johns Hopkins University in the United States showed that people with immunodeficiency who were vaccinated were 485 times more likely to end up in the hospital or die from corona than most vaccinated people.
In small studies, the CDC said, fully vaccinated immunocompromised people account for about 44% of advanced cases requiring hospitalization. Immunocompromised people are also more likely to pass the virus on to people who have been in close contact with them.
The US Food and Drug Administration has also allowed booster doses for all three vaccines available in America for some people, including those with compromised immunity, the CDC says.
Research showed that the booster dose boosted the antibody response to the vaccine in some immunocompromised people. This would make the fourth dose at least six months after you complete the third dose.
People with moderate to severe immunodeficiency include those undergoing active cancer treatment for leukemia or tumors, certain organ transplants and stem cell recipients, people with advanced or untreated HIV, and those taking high doses of corticosteroids or other medications. which may suppress their immune system.
Immunocompromised people who have received a single dose of Johnson & Johnson should receive a booster dose at least two months after their initial vaccination.
The CDC said that people who choose the Moderna vaccine as a booster, even if they receive a different vaccine as the first dose, should receive half the dose that is authorized as a booster of the Moderna vaccine.
The CDC recommends that people with conditions that threaten their immune system try to avoid crowds and poorly ventilated places, and that they should wear a mask in indoor public spaces even if they get vaccinated.
Source :سي ان ان بالعربية
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