*On May 5, 2022, the FDA limited the Emergency Use Authorization (EUA) granted to the vaccine. In a freezer at -4☏ (-20☌), or in a refrigerator between 36☏ and 46☏ (2☌ and 8☌) for up to 3 months In a freezer between -13° F and 5☏, or in the refrigerator between 36☏ and 46☏ (2☌ and 8☌) for up to 30 days Learn more about the safety and other facts about COVID-19 vaccinations here.Ĩ5% against severe disease 28 days after vaccination If a person experiences any of the above symptoms, dial 911 or call a local emergency department immediately. These side effects are more likely following the second dose of the vaccine. Other rare side effects following vaccination can include myocarditis (inflammation of the heart muscle) and pericarditis (inflammation of the tissue surrounding the heart). In rare cases, people can experience a severe allergic reaction up to 60 minutes after receiving the vaccine. People can also discuss trying over-the-counter (OTC) pain medications, such as acetaminophen, with a doctor or pharmacist. Cool compresses and exercising the arm may ease pain and swelling while staying cool, and drinking fluids can help with a fever. If a person experiences side effects after vaccination, they can take steps to care for themselves. Side effects are more common after the second dose than the first dose. Usually, these side effects indicate that the vaccine is working and are signs that the immune system is responding to it. pain and swelling around the injection site.Some people may experience temporary side effects after receiving the Pfizer vaccine, which may last a few days. A preview of a paper that looks at one particular mutation, present in variants first identified in the United Kingdom and South Africa, suggests that the Pfizer vaccine still works against them.įind out more about vaccines and how they work here.

It is likely that the Pfizer vaccine will still be effective against current variants.

While concerning, this is normal because viruses evolve over time. In some parts of the world, new variants of the SARS-CoV-2 virus have emerged. The vaccine also reduces severe illness by 92%. It indicates that two doses of the vaccine reduce symptomatic cases of COVID-19 by 94% across all age groups after 7 days of receiving the second dose. This result was consistent across age groups, sexes, races, ethnicities, and body weights, as well as those with underlying medical conditions and people who have already had a SARS-CoV-2 infection.Ī large study on the Pfizer vaccine involving about 1.2 million people in Israel supports the findings of clinical trials. There is strong evidence from clinical trials that the Pfizer vaccine has a high level of efficacy.Ī trial involving 43,548 participants, funded by BioNTech and Pfizer, reported that 2 doses of their vaccine confer 95% protection against COVID-19 in people aged 16 years and older. “Effectiveness” refers to its performance in real-world situations. “Efficacy” refers to the vaccine’s performance under ideal and controlled circumstances, such as in clinical trials. When considering the impact of the Pfizer vaccine, it is important to distinguish between its efficacy and its effectiveness. Learn more about getting the COVID-19 vaccination here. have already received another COVID-19 vaccine.are pregnant, planning to become pregnant, or are breastfeeding.

a compromised immune system or take medication that affects the immune system.a bleeding disorder or take medications to thin the blood.People should also speak with a doctor before getting the Pfizer vaccine if they have: People who have experienced allergic reactions to other vaccines should speak with a healthcare professional before getting a COVID-19 vaccine. The CDC define an immediate allergic reaction as a reaction that takes place within 4 hours of exposure, causing symptoms such as: The Centers for Disease Control and Prevention (CDC) advise that people do not get the Pfizer vaccine if they have had a severe or immediate allergic reaction to any ingredient in an mRNA COVID-19 vaccine, e.g., to polyethylene glycol (PEG) or polysorbate. However, some may need to avoid it for safety reasons. Most adults will be eligible for this vaccine.

The FDA has authorized the use of the Pfizer vaccine to prevent COVID-19 in people aged 12 years of age and older.

Pfizer side effects dose 3