If you received a Pfizer-BioNTech or Moderna COVID-19 vaccine, you should get the same product for your second shot. You should get your second shot even if you have side effects after the first shot, unless a vaccination provider or your doctor tells you not to get it.

Are you required to get a COVID-19 test to fly back to the U.S.?

Air passengers traveling to the US are required to present a negative COVID-19 test result or documentation of recovery. Airlines must confirm the negative test result or documentation of recovery for all passengers before boarding.

Can you still spread COVID-19 if you have the vaccine?

Vaccinated People Can Transmit the Coronavirus, but It’s Still More Likely If You’re Unvaccinated. COVID-19 vaccines continue to protect against severe illness but do not entirely block transmission. Fully vaccinated people are also less likely to contract the coronavirus than unvaccinated people.

Can you still get COVID-19 after booster vaccine?

COVID-19 is still a risk. Getting a booster shot doesn’t guarantee you won’t be infected with the coronavirus. But it can help your immune system build protection against severe disease or hospitalization — including from the delta variant.

How long after Pfizer COVID-19 vaccine booster is it effective?

The authors explain: “In this study, we estimated effectiveness starting from day 7 after the third dose, which is similar to the period used to define full vaccination after the second dose. Our choice is supported by high concentrations of antibodies in individuals 7 days after administration of the third dose.”

Do COVID-19 vaccine boosters work?

Results from Israel indicate that a booster dose greatly lowers the risk of severe illness. Boosters also prevent infection. This reduces the spread of SARS-CoV-2 among vaccinated and unvaccinated individuals. It isn’t yet clear how long protection from boosters will last, but the world can’t wait to find out.

How should vaccinated people prevent the spread of COVID-19?

• Wear a mask.

– To maximize protection from the Delta variant and prevent possibly spreading it to others, have

everyone in your family, even those who are vaccinated, wear a mask indoors in public if you are in an area of substantial or high transmission.

– You might choose to have everyone in your family, even those who are vaccinated, wear a mask indoors in public regardless of the level of transmission in your area.

– Unvaccinated family members, including children 2 years and older, should wear a mask in all indoor public settings.

Do you still have to wear a mask if you get the COVID-19 vaccine?

• If you have a condition or taking medications that weaken your immune system, you may not be fully protected even if you are fully vaccinated. You should continue to take all precautions recommended for unvaccinated people, including wearing a well-fitted mask, until advised otherwise by their healthcare provider.

How long will it take to build immunity after getting the COVID-19 vaccine?

It takes time for your body to build protection after any vaccination. People are considered fully vaccinated two weeks after their second shot of the Pfizer-BioNtech or Moderna COVID-19 vaccine, or two weeks after the single-dose J&J/Janssen COVID-19 vaccine.

Do I need to be tested for COVID-19 before or after traveling in the USA if I have been vaccinated?

• If you travel in the United States, you do not need to get tested before or after travel or self-quarantine after travel.

What type of covid test is required for travelling to the United States?

The test must be a SARS-CoV-2 viral test (nucleic acid amplification test or antigen test) with Emergency Use Authorization (EUA) from the U.S. Food and Drug Administration (FDA).

What are the requirements for entering the US through air travel during the COVID-19 pandemic?

Air passengers traveling to the US are required to present a negative COVID-19 test result or documentation of recovery. Airlines must confirm the negative test result or documentation of recovery for all passengers before boarding.

How many shots do I need with the Pfizer or Moderna COVID-19 vaccine?

If you receive a Pfizer-BioNTech or Moderna COVID-19 vaccine, you will need 2 shots to get the most protection.

How many doses of COVID-19 vaccine will I need to get?

The number of doses needed depends on which vaccine you receive. To get the most protection:

• Two Pfizer-BioNTech vaccine doses should be given 3 weeks (21 days) apart.
• Two Moderna vaccine doses should be given 1 month (28 days) apart.
• Johnson & Johnsons Jansen (J&J/Janssen) COVID-19 vaccine requires only one dose.

If you receive a vaccine that requires two doses, you should get your second shot as close to the recommended interval as possible. However, your second dose may be given up to 6 weeks (42 days) after the first dose, if necessary.. You should not get the second dose earlier than the recommended interval.

Can you get a Pfizer COVID-19 booster after Moderna vaccine?

Yes. The F.D.A. has updated its authorizations to allow medical providers to boost people with a different vaccine than the one they initially received, a strategy known as “mix and match.” Whether you received Moderna, Johnson & Johnson or Pfizer-BioNTech, you may receive a booster of any other vaccine.

How long after Pfizer COVID-19 vaccine booster is it effective?

The authors explain: “In this study, we estimated effectiveness starting from day 7 after the third dose, which is similar to the period used to define full vaccination after the second dose. Our choice is supported by high concentrations of antibodies in individuals 7 days after administration of the third dose.”

Will getting a COVID-19 vaccine cause me to test positive for COVID-19 on a viral test?

No. None of the authorized and recommended COVID-19 vaccines cause you to test positive on viral tests, which are used to see if you have a current infection.​

If your body develops an immune response to vaccination, which is the goal, you may test positive on some antibody tests. Antibody tests indicate you had a previous infection and that you may have some level of protection against the virus.

Learn more about the possibility of COVID-19 illness after vaccination

Is COVID-19 vaccination still necessary, even after getting the disease and recovering?

Re-infection with COVID-19 occurs, although it is relatively rare. Also, at this point we do not know precisely how long people are naturally protected from getting COVID-19 again after clearing an infection. Follow-up periods for previously-infected individuals are not yet long enough to be able to draw conclusions on the duration of protection against infection beyond six months after infection. As a result, COVID-19 vaccination is recommended even for those who have recovered from the disease.

Should unvaccinated COVID-19 survivors get the COVID-19 vaccine?

Data suggest that unvaccinated people who survive COVID-19 will be far more protected if they get vaccinated after recovering from their illness. After a coronavirus infection, “it looks like your protection may vary” depending on a number of factors, Los Angeles County Public Health Director Barbara Ferrer said.

What public health measures to reduce the spread of COVID-19 are recommended by the CDC?

● Wash your hands often with plain soap and water. The CDC recommends washing your hands often with soap and water for at least 20 seconds, especially after you have been in a public place, or after blowing your nose, coughing, or sneezing. If soap and water are not available, the CDC recommends using an alcohol-based hand sanitizer that contains at least 60 percent alcohol. Learn more about safely using hand sanitizer.

● Cover your mouth and nose with a cloth face covering or non-surgical mask when around others.

● Avoid crowds and practice social distancing (stay at least 6 feet apart from others).

Can COVID-19 spread through sexual intercourse?

Although COVID-19 has been detected in semen and feces, currently we do not think that the virus is spread through the sexual act. But, given that the virus is spread through respiratory droplets—which are much more likely to be shared when in close contact with another person—many sexual acts will be considered high risk. So, as the New York City Department of Health details in its safer sex and COVID-19 fact sheet, minimizing risks by exploring other avenues of meaningful interaction is suggested and recommended.

Should you get a COVID-19 vaccine booster?

It’s recommended that you get a booster shot as soon as you’re eligible. Your booster shot can be a different vaccine brand than you received before, as long as you completed your original vaccination series (one dose of Johnson & Johnson or two doses of Pfizer or Moderna).

How long after Pfizer COVID-19 vaccine booster is it effective?

The authors explain: “In this study, we estimated effectiveness starting from day 7 after the third dose, which is similar to the period used to define full vaccination after the second dose. Our choice is supported by high concentrations of antibodies in individuals 7 days after administration of the third dose.”

What does a booster shot do?

Typically, you would get a booster after the immunity from the initial dose(s) naturally starts to wane. The booster is designed to help people maintain their level of immunity for longer.

If you have had a severe allergic reaction (anaphylaxis) or an immediate allergic reaction, even if it was not severe, to any ingredient in an mRNA COVID-19 vaccine (such as polyethylene glycol), you should not get an mRNA COVID-19 vaccine.

Whaat happens if you mix AstraZeneca and Pfizer COVID-19 vaccines?

Researchers studied mixing and matching Pfizer’s vaccine with AstraZeneca’s, which is made using similar technology as J&J’s. There, too, researchers found that people who got an AstraZeneca shot followed by Pfizer four weeks later produced more antibodies than those who received two AstraZeneca shots.

Are the Moderna or Pfizer COVID-19 booster shots the same as the first?

If you got Moderna or Pfizer for your first dose: Moderna’s booster dose will be half of its original dosing, while Pfizer’s booster shot is the same as the initial doses.

Are the Moderna or Pfizer COVID-19 booster shots the same as the first?

If you got Moderna or Pfizer for your first dose: Moderna’s booster dose will be half of its original dosing, while Pfizer’s booster shot is the same as the initial doses.

Can you get a Pfizer COVID-19 booster after Moderna vaccine?

Yes. The F.D.A. has updated its authorizations to allow medical providers to boost people with a different vaccine than the one they initially received, a strategy known as “mix and match.” Whether you received Moderna, Johnson & Johnson or Pfizer-BioNTech, you may receive a booster of any other vaccine.

Whaat happens if you mix AstraZeneca and Pfizer COVID-19 vaccines?

Researchers studied mixing and matching Pfizer’s vaccine with AstraZeneca’s, which is made using similar technology as J&J’s. There, too, researchers found that people who got an AstraZeneca shot followed by Pfizer four weeks later produced more antibodies than those who received two AstraZeneca shots.

Can I mix and match COVID-19 booster vaccines?

Boosters are now available for the three COVID-19 vaccines, made by Pfizer-BioNTech, Moderna and Johnson & Johnson. And the Centers for Disease Control and Prevention (CDC) has given the green light for safely mixing and matching the shots.

Can the COVID-19 vaccine and other vaccines be given simultaneously?

COVID-19 vaccines may be administered without regard to timing of other vaccines. This includes simultaneous administration of COVID-19 vaccine and other vaccines on the same day.

Can I get the COVID-19 vaccine if I have an underlying condition?

People with underlying medical conditions can receive a COVID-19 vaccine as long as they have not had an immediate or severe allergic reaction to a COVID-19 vaccine or to any of the ingredients in the vaccine. Learn more about vaccination considerations for people with underlying medical conditions. Vaccination is an important consideration for adults of any age with certain underlying medical conditions because they are at increased risk for severe illness from COVID-19.

Is the COVID-19 vaccine safe for people with underlying health conditions?

Clinical trials show that COVID-19 vaccines are safe and effective in people with underlying medical conditions, including those that place them at increased risk for severe COVID-19 symptoms, compared to people without underlying medical conditions.

Should you get the Covid vaccine if you have an autoimmune disease?

The American College of Rheumatology COVID-19 Vaccine Clinical Guidance recommends that people with autoimmune and inflammatory rheumatic disease (which includes lupus) get the vaccine unless they have an allergy to an ingredient in the vaccine.

How many shots do I need with the Pfizer or Moderna COVID-19 vaccine?

If you receive a Pfizer-BioNTech or Moderna COVID-19 vaccine, you will need 2 shots to get the most protection.

How many doses of COVID-19 vaccine will I need to get?

The number of doses needed depends on which vaccine you receive. To get the most protection:

• Two Pfizer-BioNTech vaccine doses should be given 3 weeks (21 days) apart.
• Two Moderna vaccine doses should be given 1 month (28 days) apart.
• Johnson & Johnsons Jansen (J&J/Janssen) COVID-19 vaccine requires only one dose.

If you receive a vaccine that requires two doses, you should get your second shot as close to the recommended interval as possible. However, your second dose may be given up to 6 weeks (42 days) after the first dose, if necessary.. You should not get the second dose earlier than the recommended interval.

What is the recommended interval between doses of the Pfizer-BioNTech and Moderna COVID-19 vaccines?

The recommended interval between doses is 21 days for Pfizer-BioNTech and 28 days for Moderna; however, up to 42 days between doses is permissible when a delay is unavoidable.

Is it safe to take a different COVID-19 booster shot?

The study found that boosting with a different vaccine is safe, and that boosters increased antibody levels no matter the combination.

Can I get a different COVID-19 vaccine booster shot?

Notably, the FDA and CDC also authorized a “mix-and-match” strategy, enabling eligible Americans to get a booster shot from a brand different from their original vaccine.

Can you get a different COVID-19 vaccine booster?

Mixing and matching is OK for boosters Through the FDA’s authorization and the CDC’s recommendation, heterologous boosting—aka “mixing and matching”—is allowed with a single dose of any of the authorized COVID-19 vaccine boosters.

Whaat happens if you mix AstraZeneca and Pfizer COVID-19 vaccines?

Researchers studied mixing and matching Pfizer’s vaccine with AstraZeneca’s, which is made using similar technology as J&J’s. There, too, researchers found that people who got an AstraZeneca shot followed by Pfizer four weeks later produced more antibodies than those who received two AstraZeneca shots.

What medications should be avoided before the COVID-19 vaccine?

It is not recommended you take over-the-counter medicine – such as ibuprofen, aspirin, or acetaminophen – before vaccination for the purpose of trying to prevent vaccine-related side effects.

What happens if you get COVID-19 between first and second shots?

It’s possible to become infected with COVID-19 between the first and second shots of the Pfizer and Moderna vaccines — and immediately following the second shot of these vaccines. If you do catch COVID-19 between the two vaccine doses, you should make sure to get the second shot once you’re feeling better.

Is it safe to take a different COVID-19 booster shot?

The study found that boosting with a different vaccine is safe, and that boosters increased antibody levels no matter the combination.

What does the booster shot do for you?

Booster shots are administered to remind the body’s immune system about the virus it needs to defend against. This improves or gives the immune system a boost.

What is the interval between the first and second doses of the Pfizer and Moderna COVID-19 vaccines?

* The recommended interval between the first and second dose is 21 days for Pfizer-BioNTech and 28 days for Moderna; in this study, second doses received 17–25 days (Pfizer-BioNTech) and 24–32 days (Moderna) after the first dose were included.

If you have had a severe allergic reaction (anaphylaxis) or an immediate allergic reaction, even if it was not severe, to any ingredient in an mRNA COVID-19 vaccine (such as polyethylene glycol), you should not get an mRNA COVID-19 vaccine.

Are the Moderna or Pfizer COVID-19 booster shots the same as the first?

If you got Moderna or Pfizer for your first dose: Moderna’s booster dose will be half of its original dosing, while Pfizer’s booster shot is the same as the initial doses.

Whaat happens if you mix AstraZeneca and Pfizer COVID-19 vaccines?

Researchers studied mixing and matching Pfizer’s vaccine with AstraZeneca’s, which is made using similar technology as J&J’s. There, too, researchers found that people who got an AstraZeneca shot followed by Pfizer four weeks later produced more antibodies than those who received two AstraZeneca shots.

Whaat happens if you mix AstraZeneca and Pfizer COVID-19 vaccines?

Researchers studied mixing and matching Pfizer’s vaccine with AstraZeneca’s, which is made using similar technology as J&J’s. There, too, researchers found that people who got an AstraZeneca shot followed by Pfizer four weeks later produced more antibodies than those who received two AstraZeneca shots.

Can I mix and match COVID-19 booster vaccines?

Boosters are now available for the three COVID-19 vaccines, made by Pfizer-BioNTech, Moderna and Johnson & Johnson. And the Centers for Disease Control and Prevention (CDC) has given the green light for safely mixing and matching the shots.

Are the Moderna or Pfizer COVID-19 booster shots the same as the first?

If you got Moderna or Pfizer for your first dose: Moderna’s booster dose will be half of its original dosing, while Pfizer’s booster shot is the same as the initial doses.

Can you get a Pfizer COVID-19 booster after Moderna vaccine?

Yes. The F.D.A. has updated its authorizations to allow medical providers to boost people with a different vaccine than the one they initially received, a strategy known as “mix and match.” Whether you received Moderna, Johnson & Johnson or Pfizer-BioNTech, you may receive a booster of any other vaccine.

Is it safe to take a different COVID-19 booster shot?

The study found that boosting with a different vaccine is safe, and that boosters increased antibody levels no matter the combination.

Can I get the COVID-19 vaccine if I have an underlying condition?

People with underlying medical conditions can receive a COVID-19 vaccine as long as they have not had an immediate or severe allergic reaction to a COVID-19 vaccine or to any of the ingredients in the vaccine. Learn more about vaccination considerations for people with underlying medical conditions. Vaccination is an important consideration for adults of any age with certain underlying medical conditions because they are at increased risk for severe illness from COVID-19.

Is the COVID-19 vaccine safe for people with underlying health conditions?

Clinical trials show that COVID-19 vaccines are safe and effective in people with underlying medical conditions, including those that place them at increased risk for severe COVID-19 symptoms, compared to people without underlying medical conditions.

Should you get the Covid vaccine if you have an autoimmune disease?

The American College of Rheumatology COVID-19 Vaccine Clinical Guidance recommends that people with autoimmune and inflammatory rheumatic disease (which includes lupus) get the vaccine unless they have an allergy to an ingredient in the vaccine.

How many shots do I need with the Pfizer or Moderna COVID-19 vaccine?

If you receive a Pfizer-BioNTech or Moderna COVID-19 vaccine, you will need 2 shots to get the most protection.

How many doses of COVID-19 vaccine will I need to get?

The number of doses needed depends on which vaccine you receive. To get the most protection:

• Two Pfizer-BioNTech vaccine doses should be given 3 weeks (21 days) apart.
• Two Moderna vaccine doses should be given 1 month (28 days) apart.
• Johnson & Johnsons Jansen (J&J/Janssen) COVID-19 vaccine requires only one dose.

If you receive a vaccine that requires two doses, you should get your second shot as close to the recommended interval as possible. However, your second dose may be given up to 6 weeks (42 days) after the first dose, if necessary.. You should not get the second dose earlier than the recommended interval.

What is the recommended interval between doses of the Pfizer-BioNTech and Moderna COVID-19 vaccines?

The recommended interval between doses is 21 days for Pfizer-BioNTech and 28 days for Moderna; however, up to 42 days between doses is permissible when a delay is unavoidable.

Is it safe to take a different COVID-19 booster shot?

The study found that boosting with a different vaccine is safe, and that boosters increased antibody levels no matter the combination.

What does the booster shot do for you?

Booster shots are administered to remind the body’s immune system about the virus it needs to defend against. This improves or gives the immune system a boost.

What is the interval between the first and second doses of the Pfizer and Moderna COVID-19 vaccines?

* The recommended interval between the first and second dose is 21 days for Pfizer-BioNTech and 28 days for Moderna; in this study, second doses received 17–25 days (Pfizer-BioNTech) and 24–32 days (Moderna) after the first dose were included.

Are the Moderna or Pfizer COVID-19 booster shots the same as the first?

If you got Moderna or Pfizer for your first dose: Moderna’s booster dose will be half of its original dosing, while Pfizer’s booster shot is the same as the initial doses.

Is it safe to take a different COVID-19 booster shot?

The study found that boosting with a different vaccine is safe, and that boosters increased antibody levels no matter the combination.

What are the some common side effects of the third Covid shot?

So far, reactions reported after the third mRNA dose were similar to that of the two-dose series: fatigue and pain at injection site were the most commonly reported side effects, and overall, most symptoms were mild to moderate.

Is it safe to take a different COVID-19 booster shot?

The study found that boosting with a different vaccine is safe, and that boosters increased antibody levels no matter the combination.

Can you get a different COVID-19 vaccine booster?

Mixing and matching is OK for boosters Through the FDA’s authorization and the CDC’s recommendation, heterologous boosting—aka “mixing and matching”—is allowed with a single dose of any of the authorized COVID-19 vaccine boosters.

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

The most commonly reported side effects were pain at the injection site, tiredness, headache, muscle pain, chills, joint pain, and fever. Side effects typically started within two days of vaccination and resolved 1-2 day later.

If you have had a severe allergic reaction (anaphylaxis) or an immediate allergic reaction, even if it was not severe, to any ingredient in an mRNA COVID-19 vaccine (such as polyethylene glycol), you should not get an mRNA COVID-19 vaccine.

How is the Moderna COVID-19 vaccine similar to the Pfizer vaccine?

Moderna

Moderna’s vaccine was authorized for emergency use in the U.S. last December, about a week after the Pfizer vaccine. Moderna uses the same mRNA technology as Pfizer and has a similarly high efficacy at preventing symptomatic disease.

How many shots do I need with the Pfizer or Moderna COVID-19 vaccine?

If you receive a Pfizer-BioNTech or Moderna COVID-19 vaccine, you will need 2 shots to get the most protection.

How many doses of COVID-19 vaccine will I need to get?

The number of doses needed depends on which vaccine you receive. To get the most protection:

• Two Pfizer-BioNTech vaccine doses should be given 3 weeks (21 days) apart.
• Two Moderna vaccine doses should be given 1 month (28 days) apart.
• Johnson & Johnsons Jansen (J&J/Janssen) COVID-19 vaccine requires only one dose.

If you receive a vaccine that requires two doses, you should get your second shot as close to the recommended interval as possible. However, your second dose may be given up to 6 weeks (42 days) after the first dose, if necessary.. You should not get the second dose earlier than the recommended interval.

What is the recommended interval between doses of the Pfizer-BioNTech and Moderna COVID-19 vaccines?

The recommended interval between doses is 21 days for Pfizer-BioNTech and 28 days for Moderna; however, up to 42 days between doses is permissible when a delay is unavoidable.

Are the Moderna or Pfizer COVID-19 booster shots the same as the first?

If you got Moderna or Pfizer for your first dose: Moderna’s booster dose will be half of its original dosing, while Pfizer’s booster shot is the same as the initial doses.

What are some of the common side effects of Pfizer COVID-19 vaccine booster shots?

Fatigue and pain at the injection site were the most commonly reported side effects, and overall, most side effects were mild to moderate. However, as with the 2-shot primary series, serious side effects are rare, but may occur.

Who developed the Moderna COVID-19 vaccine?

The vaccine has been developed by Moderna, in Cambridge, Massachusetts, and funded by the National Institute of Allergy and Infectious Diseases (NIAID), which is part of the US National Institutes of Health.

Can I get the COVID-19 vaccine if I have an underlying condition?

People with underlying medical conditions can receive a COVID-19 vaccine as long as they have not had an immediate or severe allergic reaction to a COVID-19 vaccine or to any of the ingredients in the vaccine. Learn more about vaccination considerations for people with underlying medical conditions. Vaccination is an important consideration for adults of any age with certain underlying medical conditions because they are at increased risk for severe illness from COVID-19.

Is the COVID-19 vaccine safe for people with underlying health conditions?

Clinical trials show that COVID-19 vaccines are safe and effective in people with underlying medical conditions, including those that place them at increased risk for severe COVID-19 symptoms, compared to people without underlying medical conditions.

Should you get the Covid vaccine if you have an autoimmune disease?

The American College of Rheumatology COVID-19 Vaccine Clinical Guidance recommends that people with autoimmune and inflammatory rheumatic disease (which includes lupus) get the vaccine unless they have an allergy to an ingredient in the vaccine.

Are the Moderna or Pfizer COVID-19 booster shots the same as the first?

If you got Moderna or Pfizer for your first dose: Moderna’s booster dose will be half of its original dosing, while Pfizer’s booster shot is the same as the initial doses.

Why should you take two COVID-19 vaccines?

If you get COVID-19, you also risk giving it to loved ones who may get very sick.

People with moderately to severely compromised immune systems should receive an additional dose of mRNA COVID-19 vaccine after the initial 2 doses.

What is the interval between the first and second doses of the Pfizer and Moderna COVID-19 vaccines?

* The recommended interval between the first and second dose is 21 days for Pfizer-BioNTech and 28 days for Moderna; in this study, second doses received 17–25 days (Pfizer-BioNTech) and 24–32 days (Moderna) after the first dose were included.

How long do the side effects of the COVID-19 booster usually last?

They’re very similar to what happens after the second dose, which is that you do tend to get pain at the injection site, usually just lasts a few days, and usually it’s not severe. And then you can get systemic side effects such as fever, fatigue, headache, and again, that usually goes away after a day or two.

Is it normal to have side effects after second COVID-19 vaccine?

Side effects after your second shot may be more intense than the ones you experienced after your first shot. These side effects are normal signs that your body is building protection and should go away within a few days.

What does a booster shot do?

Typically, you would get a booster after the immunity from the initial dose(s) naturally starts to wane. The booster is designed to help people maintain their level of immunity for longer.

Are the Moderna or Pfizer COVID-19 booster shots the same as the first?

If you got Moderna or Pfizer for your first dose: Moderna’s booster dose will be half of its original dosing, while Pfizer’s booster shot is the same as the initial doses.

Is it safe to take a different COVID-19 booster shot?

The study found that boosting with a different vaccine is safe, and that boosters increased antibody levels no matter the combination.

Can I mix and match COVID-19 booster vaccines?

Boosters are now available for the three COVID-19 vaccines, made by Pfizer-BioNTech, Moderna and Johnson & Johnson. And the Centers for Disease Control and Prevention (CDC) has given the green light for safely mixing and matching the shots.

When should you take the second COVID-19 vaccine?

The timing between your first and second shots depends on which vaccine you received. If you received the Pfizer-BioNTech COVID-19 Vaccine, you should get your second shot 3 weeks (or 21 days) after your first.

When should you take the second mRNA COVID-19 vaccine?

You should get your second shot as close to the recommended 3-week or 4-week interval as possible. However, your second dose may be given up to 6 weeks (42 days) after the first dose, if necessary. You should not get the second dose early.

What happens if you get COVID-19 between first and second shots?

It’s possible to become infected with COVID-19 between the first and second shots of the Pfizer and Moderna vaccines — and immediately following the second shot of these vaccines. If you do catch COVID-19 between the two vaccine doses, you should make sure to get the second shot once you’re feeling better.