Is the COVID-19 vaccine working if I don t have side effects?

Absolutely not, according to experts and data from clinical trials of the Pfizer vaccine. The latter indicated that the vaccine was generally 90 to 100 percent effective against COVID-19 in people regardless of their sex, age, race, ethnicity or preexisting conditions.
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What does a lack of side effects from the COVID-19 vaccine mean?

Side effects after the COVID-19 vaccine are caused by your immune system. But a lack of side effects doesn't mean your COVID-19 vaccine didn't work.
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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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Do people who have had COVID-19 have more side effects with the vaccine?

If you had COVID-19 before being vaccinated, the first injection may cause more noticeable side effects than for people who have not had the coronavirus. If you have never had COVID-19, you may notice more side effects after the second dose than after the first dose.

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


Some people have no side effects. Many people have reported side effects, such as headache, fatigue, and soreness at the injection site, that are generally mild to moderate and go away within a few days.

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These are possible side effects after getting a COVID booster shot



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

The most commonly reported side effects were pain at the injection site, tiredness, headache, muscle pain, chills, joint pain, nausea and vomiting, swollen lymph nodes in the same arm of the injection and fever. Side effects typically started within two days of vaccination and resolved two or three days later.
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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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Should you get the COVID-19 vaccine even if you have already had COVID-19 in the US?

Get Vaccinated Even If You Had COVID-19 and Think You are Immune You should get a COVID-19 vaccine even if you already had COVID-19. No currently available test can reliably determine if you are protected after being infected with the virus that causes COVID-19.
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Should you get the COVID-19 vaccine if you already had COVID-19 and recovered?


If I already had COVID-19 and recovered, do I still need to get a COVID-19 vaccine? You should get a COVID-19 vaccine even if you already had COVID-19. Getting a COVID-19 vaccine after you recover from COVID-19 infection provides added protection to your immune system.

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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.

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When will my COVID-19 vaccine side effects go away?

Side effects can affect your ability to do daily activities, but they should go away in a few days.
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Is it normal to get symptoms of the COVID-19 vaccine?

It is normal for these to occur. Common side effects include pain, redness, and swelling in the arm where they received the vaccination, as well as fever, chills, tiredness, headache, nausea, and muscle pain.
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Does having fever, body pain, and swollen lymph nodes after the COVID-19 vaccine mean I am sick?

These symptoms do not mean you are sick. They signal that your immune system is responding to the shot and building up protection against the coronavirus.

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Does the COVID-19 vaccine cause Bell’s palsy?

Throughout the Moderna and Pfizer/BioNTech clinical trials, eight cases of Bell’s palsy — a type of rare, sudden muscle weakness in the face — were reported in total. Four of the cases were in the Pfizer vaccine group, three in the Moderna vaccine group, and one in the Moderna placebo group. The rate of Bell’s palsy incidence in the vaccine clinical trials was less than or equal to the rate of developing the condition in general. While there’s no evidence the cases were caused by the vaccine, they are considered an adverse event and will continue to be reported and monitored as a special interest adverse effect.

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What are the common side effects of the Johnson and Johnson COVID-19 vaccine?


Side effects that have been reported with the Janssen COVID-19 Vaccine include: Injection site reactions: pain, redness of the skin, and swelling. General side effects: headache, feeling very tired, muscle aches, nausea, fever. Swollen lymph nodes.

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Should I get the COVID-19 vaccine if Ive never had COVID-19?


"People who have not knowingly been infected with COVID should be vaccinated, and after that, be assured that they are protected against serious disease from this virus,"

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Can you get COVID-19 if you already had it and have antibodies?


It is important to remember that some people with antibodies to SARS-CoV-2 may become infected after vaccination (vaccine breakthrough infection) or after recovering from a past infection (reinfected).

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Can you get reinfected with COVID-19 after having COVID?


If you or a loved one had COVID‑19, you're likely wondering how long you might be protected from getting it again. In general, research suggests that natural immunity against infection is strong for about 3-5 months. After that, your risk of COVID‑19 reinfection may start to go up.

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How strong is immunity after a COVID-19 infection?


How Strong Is Immunity After a COVID-19 Infection? About 90% of people develop some number of protective antibodies after a COVID-19 infection, according to the CDC. But how high those levels climb appears to be all over the map.

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Will a person with COVID-19 vaccine have a positive antibody test?

A COVID-19 vaccination may also cause a positive antibody test result for some but not all antibody tests. You should not interpret the results of your SARS-CoV-2 antibody test as an indication of a specific level of immunity or protection from SARS-CoV-2 infection.
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Does your immune system get stronger after COVID-19?


Any time you catch a virus and recover from the illness, you retain antibodies. These antibodies help your body fight off future infections so that you either don't get sick or have milder symptoms.

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Has there been any serious adverse events as a result of taking the Pfizer-BioNTech COVID-19 Vaccine?

Serious adverse events, while uncommon (<1.0%), were observed at slightly higher numerical rates in the vaccine study group compared to the saline placebo study group, both overall and for certain specific adverse events occurring in very small numbers.
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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

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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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Is it normal for lymph nodes to swell after receiving the COVID-19 vaccine?

“It's completely normal. It's your immune system reacting to the vaccine, as it should.”

The enlarged lymph nodes may feel like a lump and be a little tender, or you may not notice them at all, Dr.Roy adds.

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