Is the Pfizer vaccine similar to Moderna?

Moderna uses the same mRNA technology as Pfizer-BioNTech and had a similarly high efficacy at preventing symptomatic disease when the companies applied for authorization; it also needs to be stored in freezer-level temperatures.

What is the best vaccine for COVID-19?

In most situations, mRNA COVID-19 vaccines (Pfizer-BioNTech or Moderna) are preferred over the J&J/Janssen COVID-19 vaccine for primary and booster vaccination due to the risk of serious adverse events.

Is it safe for women to take the Moderna or Pfizer COVID-19 vaccine?

The Centers for Disease Control and Prevention (CDC) recommend most adult women receive a two-shot primary series of either the Pfizer-BioNTech or Moderna mRNA COVID-19 vaccines, followed by a booster dose at least five months after the last primary dose.

How effective is the Moderna COVID-19 vaccine?

Effectiveness of the Pfizer vaccine reached a peak of 96% at two months and remained around 90% at seven months and effectiveness of the Moderna vaccine reached a peak of 97% at two months and remained at 94% at seven months.

Can the Moderna COVID-19 vaccine cause allergic reactions?

There is a remote chance that the Moderna COVID-19 Vaccine could cause a severe allergic
reaction. A severe allergic reaction would usually occur within a few minutes to one hour after
getting a dose of the Moderna COVID-19 Vaccine. For this reason, your vaccination provider
may ask you to stay at the place where you received your vaccine for monitoring after
vaccination. Signs of a severe allergic reaction can include:
• Difficulty breathing
• Swelling of your face and throat
• A fast heartbeat
• A bad rash all over your body
• Dizziness and weakness

Conversation with Albert Bourla, CEO of Pfizer | Davos | #WEF22

Are there any allergic reactions to the Moderna and Pfizer COVID-19 vaccines?

The Moderna and Pfizer-BioNTech COVID-19 vaccines are the first two COVID-19 vaccines authorized by the Food and Drug Administration for emergency use and already have been given to millions of Americans. Most of the rare, severe allergic reactions to these vaccines have occurred in people with a history of allergies.

How do you know if you are allergic to the COVID-19 vaccine?

An immediate allergic reaction happens within 4 hours after getting vaccinated and could include symptoms such as hives, swelling, and wheezing (respiratory distress).

Can I get COVID-19 again after having the vaccine?

Getting COVID-19 after you've been vaccinated or recovered is still possible. But having some immunity -- whether from infection or vaccination -- really drops the odds of this happening to you.

How long does it take for immunity to wane after receiving the COVID-19 vaccine?

A study published by the U.S. Centers for Disease Control and Prevention found that immunity against severe COVID-19 begins to wane four months after receiving a so-called "booster" third dose of the Pfizer or Moderna vaccines.

Is the Moderna COVID-19 vaccine effective after 6 months?

DURHAM, N.C. – A booster dose of Moderna's COVID-19 vaccine showed signs of waning antibody levels against the Omicron variant after six months, but the antibodies still remained effective against the variant in laboratory tests, according to a Jan. 26 study in the New England Journal of Medicine.

What are some of the side effects of the COVID-19 vaccine in women?

COVID-19 vaccines can cause swelling in your lymph nodes or arm. Women who have been vaccinated against COVID-19 can develop enlarged underarm lymph nodes on the same side where they had the shot. It's more common for this to happen after boosters and additional doses.

How does the COVID-19 vaccine affect menstruation?

Women who received COVID-19 vaccines had a less than one-day increase in the length of their menstrual cycles around the time of their doses. The findings suggest that women may have a slightly longer menstrual cycle after COVID-19 vaccination, but the change is temporary and within the range of normal variation.

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

The most commonly reported side effects by individuals who received a booster dose of the Moderna COVID-19 Vaccine after completion of a two-dose primary series were pain, redness and swelling at the injection site, as well as fatigue, headache, muscle or joint pain and chills.

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).

How long do COVID-19 vaccines last?

It is normal for virus-fighting antibodies—such as those that are stimulated by a COVID-19 vaccine—to wane over time. Monitoring antibody levels in the blood is one way to measure vaccine efficacy and research has found that protection remains high for six months after the second shot of a Pfizer or Moderna vaccine.

Is it safe to take the Johnson and Johnson COVID-19 vaccine?

For many people, the benefits of the Johnson & Johnson vaccine outweigh the risks. It's effective at preventing severe illness, hospitalization, and death from COVID-19, and it's the only single-dose option available. However, you'll still need to get a booster shot 2 months later.

How long is the stability of the Pfizer-BioNTech COVID-19 vaccine?

Pfizer-BioNTech has submitted data to FDA supporting the stability of their COVID-19 vaccine when stored for up to one month (31 days) at 2°-8°C (standard refrigerator temperature).

How long does immunity last after COVID-19 infection?

Early on, researchers thought that natural immunity to COVID-19 only lasted for about 2 to 3 months before fading. As the pandemic continued, experts started finding evidence that natural immunity could last for almost a year after infection. But along came the Omicron variant — and that's changed everything.

How long does the protection from Pfizer and Moderna's COVID-19 booster vaccine last?

The most recent research from the CDC suggests that protection from the Pfizer and Moderna COVID-19 vaccines starts to fade around 4 months after a booster dose.

Has anyone gotten COVID-19 after being fully vaccinated?

Some fully vaccinated people—and those who have received boosters—have acquired SARS-CoV-2 and developed COVID-19. That is expected. One Mayo Clinic intensivist explains what to know about COVID-19 vaccination, boosters and breakthrough infections.

Why do some people still get COVID-19 after being fully vaccinated?

Because vaccines are not 100% effective, as the number of people who are fully vaccinated goes up, the number of vaccine breakthrough infections will also increase. However, the risk of infection remains much higher for unvaccinated than vaccinated people.

Can you get reinfected with COVID-19?

Reinfections can and have happened even shortly after recovery, the researchers said. And they will become increasingly common as immunity wanes and new SARS-CoV-2 variants arise.

What to do if you get an allergic reaction from the COVID-19 vaccine?

If you get a COVID-19 vaccine and you think you might be having a severe allergic reaction after leaving the vaccination provider site, seek immediate medical care by calling 911.

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.

Why do people who had COVID-19 have a strong reaction to the vaccine?

The next time you encounter the pathogen, these responses will kick in faster and stronger, because your immune system is already primed to recognise and respond to it. This is why people who have already recovered from COVID-19 may experience more of these mild reactions.