Which is safer Pfizer or Moderna?

While both vaccines were highly effective in preventing infection, hospitalization and death, the Moderna vaccine conferred a 21% lower risk of infection and a 41% lower risk of hospitalization.
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Is the Pfizer COVID-19 vaccine safe?


Pfizer-BioNTech COVID-19 Vaccine Ingredients. All COVID-19 vaccine ingredients are safe. Nearly all of the ingredients in COVID-19 vaccines are ingredients found in many foods – fats, sugars, and salts. The Pfizer-BioNTech COVID-19 vaccine (COMIRNATY) also contains a harmless piece of messenger RNA (mRNA).

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What are the possible side effects of the Moderna COVID-19 vaccine?


Possible side effects: Pain, redness, swelling in the arm where the shot was administered; tiredness, headache, muscle pain, chills, fever, nausea throughout the rest of the body. If any of these side effects occur, they should go away in a few days.

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Is it safe to take the Moderna, Pfizer-BioNTech, or J&J COVID-19 vaccine during pregnancy?

No safety concerns were found in animal studies: Studies in animals receiving a Moderna, Pfizer-BioNTech, or Johnson & Johnson (J&J)/Janssen COVID-19 vaccine before or during pregnancy found no safety concerns in pregnant animals or their babies.
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Has anyone had severe reactions to the Moderna COVID-19 vaccine?


Monitoring of the Moderna COVID-19 vaccine has found 10 cases of anaphylaxis after the administration of 4,041,396 first doses of the Moderna COVID-19 vaccine. In 9 out of these 10 cases of anaphylaxis, the recipient of the vaccine had onset of symptoms within 30 min of administration.

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Here's the key differences between Moderna and Pfizer vaccines: Leading vaccine researcher



What are the severe allergic reactions to COVID-19 mRNA vaccines?


“Overall, severe allergic reactions to COVID-19 mRNA vaccines, including life-threatening anaphylaxis reactions such as low blood pressure and difficulty breathing, are rare, on the order of five cases per million vaccine doses administered,” noted Dr. Guerrerio.

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Can you get the COVID-19 vaccine if you have an allergic reaction?


If you have had an immediate allergic reaction (a reaction that started within 4 hours) to any vaccine other than a COVID-19 vaccine or any injectable therapy, you may still be able to get a COVID-19 vaccine. However, your doctor may refer you to an allergy and immunology specialist for additional care or advice.

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Is the COVID-19 vaccine safe for pregnancy?

Vaccination is recommended for pregnant women to prevent COVID-19, including severe illness and death. COVID-19 vaccination is safe and effective when administered during pregnancy
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What can you tell us about pregnancy after receiving the Pfizer COVID-19 shot?


What can you tell us about that? Results from published studies suggest there is no increased risk of first trimester pregnancy loss for patients who receive any of the three vaccines that currently have emergency use authorization: Pfizer, Moderna and Johnson & Johnson-Janssen.

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Can you have the mRNA COVID-19 vaccine if pregnant?


Data have clearly shown that receiving an mRNA COVID-19 vaccine during pregnancy reduces the risk for infection, severe illness and death from COVID-19 among people who are pregnant.

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What are the possible side effects of the Moderna and Pfizer COVID-19 vaccines?


Possible side effects: Pain, redness, or swelling at the site where the shot was administered, and/or tiredness, headache, muscle pain, chills, fever, or nausea throughout the rest of the body. If these side effects occur, they should go away in a few days. A few side effects are serious, but rare.

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When do COVID-19 vaccine side effects appear?


You probably experienced COVID-19 vaccine side effects fairly quickly when you had your initial injections. The same is true for COVID-19 vaccine booster shots: Most people notice side effects within the first 24 hours. The symptoms typically only last a day or two. Some people don't notice any side effects.

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Is it normal to feel sick after having the COVID-19 vaccine?

It is normal to feel sick after getting a COVID-19 vaccine.
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Is the COVID-19 vaccine safe for everyone?

• COVID-19 vaccines are safe and effective.
• Millions of people in the United States have received COVID-19 vaccines under the most intense safety monitoring in U.S. history.
• CDC recommends you get a COVID-19 vaccine as soon as possible.

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Are there any safety concerns concerning mRNA technology of the Pfizer-BioNTech COVID-19 Vaccine?

FDA does not have specific safety concerns with a vaccine that utilizes this technology.

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What is the effectiveness of the COVID-19 vaccine?


COVID-19 vaccine efficacy or effectiveness against severe disease remained high, although it did decrease somewhat by 6 months after full vaccination. By contrast, vaccine efficacy or effectiveness against infection and symptomatic disease decreased approximately 20–30 percentage points by 6 months.

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Can I get pregnant after receiving the COVID-19 vaccine?

Many people have become pregnant after receiving a COVID-19 vaccine, including some who got vaccinated during COVID-19 vaccine clinical trials.
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How does the COVID-19 vaccine pregnancy registry work?

The v-safe COVID-19 Vaccine Pregnancy Registry is a registry to collect additional health information from v-safe participants who report being pregnant at the time of vaccination or a positive pregnancy test after vaccination.
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Can COVID-19 affect pregnancy?


People who have COVID-19 during pregnancy are also at increased risk for complications that can affect their pregnancy and developing baby. For example, COVID-19 during pregnancy increases the risk of delivering a preterm (earlier than 37 weeks) and or stillborn infant.

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Has the COVID-19 vaccine been tested on pregnant women?

Evidence continues to build showing that COVID-19 vaccination before and during pregnancy is safe and effective.
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What is the v-safe COVID-19 vaccine pregnancy registry?

The v-safe COVID-19 Vaccine Pregnancy Registry is for v-safe participants who self-identify as pregnant at the time of vaccination or shortly thereafter (within 30 days of vaccination). The registry activities are in addition to the v-safe after vaccination health check-ins that participants receive via text message.
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When did the CDC release safety data for pregnancy and the COVID-19 vaccine?


In April 2021, CDC released the first U.S. data on the safety of mRNA COVID-19 vaccines administered during pregnancy based on analyses of data from three vaccine safety-related databases, including the v-safe COVID-19 Pregnancy Registry.

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Should I take an antihistamine before the COVID-19 vaccine?

It is also not recommended to take antihistamines before getting a COVID-19 vaccine to try to prevent allergic reactions.
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How soon does anaphylaxis happen after COVID-19 vaccine?

Symptoms of anaphylaxis often occur within 15-30 minutes of vaccination, though it can sometimes take several hours for symptoms to appear.
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What are some exemptions from the COVID-19 vaccine?


Some people may be at risk for an adverse reaction because of an allergy to one of the vaccine components or a medical condition. This is referred to as a medical exemption. Some people may decline vaccination because of a sincerely held religious belief. This is referred to as a religious exemption.

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