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In the original clinical trials for Pfizer-BioNTech's COVID-19 vaccine, for example, less than half of study participants reported side effects, but the shot worked well for the vast majority of ...
“The vaccine does not have the live COVID-19 virus in it,” Dr. Robinson says. “Instead, it targets your immune system to create antibodies that will fight the virus if you were infected.”
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 ...
The bivalent Omicron COVID-19 booster’s side effects are similar to that of the original vaccine series, and include fever, fatigue, and muscle pain.
[11] [12] Safety, efficacy, and clinical endpoints may vary, including the definition of side effects, infection or amount of transmission, and whether the vaccine prevents moderate or severe infection. [13] [14] [15] A clinical trial design in progress may adopt an "adaptive design". If accumulating data provide insights about the treatment ...
At the same briefing Dr. Samina Strauss of PRAC confirmed "our conclusion is that these clotting disorders are very rare side effects of the vaccine". [ 44 ] The UK Medicines and Healthcare products Regulatory Agency (MHRA) held a news conference on 7 April 2021, and while there is no proof that the AZD1222 vaccination caused the rare blood ...
The most common side effects of the vaccine in the trials were usually mild or moderate, occurred within two days after vaccination, and got better within 1 or 2 days. [83] [1] [84] The most common side effects are pain at the injection site, headache, tiredness, muscle pain, and nausea, affecting more than 1 in 10 people.
Here’s the thing: If you tend to have side effects after getting your flu or COVID-19 shot, or after both, it’s still likely you may have them when you get both at once.