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Potential side effects of the 2023 vaccine: This fall’s updated COVID vaccine is new, but it does not produce new, unknown or harsher side effects. “I get that people might be worried about ...
Having side effects after getting a COVID-19 vaccine are a sign that your immune system is responding, experts say.
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A test-negative [note 1] case-control study published in August 2021, found that two doses of the BNT162b2 (Pfizer) vaccine had 93.7% effectiveness against symptomatic disease caused by the alpha (B.1.1.7) variant and 88.0% effectiveness against symptomatic disease caused by the delta (B.1.617.2) variant. [87]
VAERS is a postmarketing surveillance program, collecting information about adverse events (possible harmful side effects) that occur after administration of vaccines to ascertain whether the risk–benefit ratio is high enough to justify continued use of any particular vaccine.
The vaccines can be used in people more than one or three years of age depending on the formulation. [4] The vaccine appears to be safe during pregnancy. [4] Serious side effects are very uncommon. [4] Minor side effects may include fever, and redness and pain at the site of injection. [4] Older formulations were more commonly associated with ...
Here’s what you need to know about the new vaccine, plus potential side effects to keep in mind. ... two mRNA vaccines from Pfizer and Moderna, and a protein-based vaccine from Novavax. These ...
In response to the concerns over the adverse effects relating to rare blood clotting types Germany has suspended use of the AZD1222 in those under 60 years of age; in contrast to a period previously having suspended use of AZD1222 to over–65s due to limited data of the efficacy of the vaccine to this age group at that time. [57]