09-09-2021, 03:51 PM
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WSJ: Do You Need a Covid-19 Vaccine Booster Shot?
09-09-2021, 03:52 PM
What is a booster shot?
It is an extra dose of the vaccine. In the case of the messenger RNA vaccines, it would be a third dose. That third dose will likely be the same as the first two doses of the Pfizer-BioNTech shot. The FDA is figuring whether to give a dose of the Moderna vaccine that is lower than the first two doses given. The extra dose mobilizes your body’s immune system defenses further to protect against Covid-19, especially variants such as Delta that are better at eluding vaccine-generated protection. Pfizer and partner BioNTech said early testing indicates a booster shot given at least six months after the second vaccine dose produces antibody levels five to 10 times higher than after two doses.
It is an extra dose of the vaccine. In the case of the messenger RNA vaccines, it would be a third dose. That third dose will likely be the same as the first two doses of the Pfizer-BioNTech shot. The FDA is figuring whether to give a dose of the Moderna vaccine that is lower than the first two doses given. The extra dose mobilizes your body’s immune system defenses further to protect against Covid-19, especially variants such as Delta that are better at eluding vaccine-generated protection. Pfizer and partner BioNTech said early testing indicates a booster shot given at least six months after the second vaccine dose produces antibody levels five to 10 times higher than after two doses.
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