Global Statistics

All countries
554,031,239
Confirmed
Updated on July 3, 2022 3:11 am
All countries
526,090,452
Recovered
Updated on July 3, 2022 3:11 am
All countries
6,360,788
Deaths
Updated on July 3, 2022 3:11 am

Global Statistics

All countries
554,031,239
Confirmed
Updated on July 3, 2022 3:11 am
All countries
526,090,452
Recovered
Updated on July 3, 2022 3:11 am
All countries
6,360,788
Deaths
Updated on July 3, 2022 3:11 am
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How Long Between Pfizer Covid 19 Vaccine Doses

Youth 12 To 17 Years Of Age

Why the Pfizer COVID-19 vaccine requires 2 doses | Connect the Dots

The Pfizer-BioNTech Comirnaty vaccine is preferred for the initial series in youth 12 to 17 years old to minimize the risk of myocarditis/pericarditis. Moderna Spikevax may be considered in those who are moderately to severely immunocompromised based on clinical judgment. Booster doses are not authorized or recommended for those under 18 years of age.

The dose of Pfizer-BioNTech Comirnaty in youth 12 to 17 years of age is 30 micrograms . Table 1 provides a summary of recommendations of products and doses by age.

Children who are turning 12 years of age between their first and second dose should receive the:

  • 10-microgram dose of Pfizer-BioNTech Comirnaty for the first dose
  • 30-microgram dose for the second dose

If a youth 12 to 17 years of age inadvertently receives a 10-microgram dose of the Pfizer-BioNTech Comirnaty vaccine instead of the 30-microgram dose, the dose should be considered valid.

  • If that was their first dose, the 30-microgram dose should be used for the second dose.
  • If both doses were 10 micrograms, the series would still be considered valid.

Q How Long Will The Vaccine Protect Me From Covid

A. We are still learning about length of immunity. To determine how long protection lasts, follow-up studies are required to detect levels of both types of immune responses antibody and T cell as well as any repeated exposure risks. As more information becomes available, more information will be shared on the length of immunity.

When Can I Get The Additional In

You can get the additional payment for administering the COVID-19 vaccine in Medicare patients homes when either of these situations applies:

  • The patient has difficulty leaving the home to get the vaccine, which could mean any of these:
  • They have a condition, due to an illness or injury, that restricts their ability to leave home without a supportive device or help from a paid or unpaid caregiver
  • They have a condition that makes them more susceptible to contracting a pandemic disease like COVID-19
  • They are generally unable to leave the home, and if they do leave home it requires a considerable and taxing effort
  • The patient is hard-to-reach because they have a disability or face clinical, socioeconomic, or geographical barriers to getting a COVID-19 vaccine in settings other than their home. These patients face challenges that significantly reduce their ability to get vaccinated outside the home, such as challenges with transportation, communication, or caregiving.
  • Unlike the requirements under the Medicare home health benefit, you or another allowed practitioner dont need to certify that the Medicare patient is homebound, but you must document in the patients medical record their clinical status or the barriers they face to getting the vaccine outside the home.

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    Some People Can Wait 8 Weeks Between First 2 Vaccine Doses: Cdc

    Feb. 24, 2022 — It may be helpful for some people to wait up to 8 weeks between the first and second doses of the Pfizer/BioNTech and Moderna COVID vaccines, the CDC says in

    âAn 8-week interval may be optimal for some people ages 12 years and older, especially for males ages 12 to 39 years,â the agency says.

    The longer interval would reduce the risk of myocarditis, a type of inflammation in the heart muscles, the CDC says. Though cases of vaccine-related myocarditis are rare, more have occurred in this age group of males than other groups.

    âWhile absolute risk remains small, the relative risk for myocarditis is higher for males ages 12-39 years, and this risk might be reduced by extending the interval between the first and second dose,â the CDC says.

    Previously, the CDC recommended that people get their second vaccine dose 3 weeks after the first Pfizer dose and 4 weeks after the first Moderna dose. That recommendation remains for people who are 65 or older, have compromised immune systems, or need rapid protection because of concerns about severe disease or high community transmission.

    Children 11 and younger should still get the second Pfizer dose 3 weeks after the first, the CDC says.

    The CDC didnât change the guidance on how long to wait for a booster dose. Itâs still 5 months after a second dose of Pfizer or Moderna or 2 months after the single-dose Johnson & Johnson vaccine.

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    Booking Your 2nd Dose

    What Do I Need to Know About COVID

    People aged 16 or over are eligible for a 2nd dose.

    People aged 18 or over should have their 2nd dose from 8 weeks after their 1st dose.

    Most people aged 16 or 17 should have their 2nd dose from 12 weeks after their 1st dose.

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    Intervals Between First And Second Doses

    NACI recommends that for those who have not completed their primary series, the optimal interval between the first and second dose is 8 weeks. This interval provides enhanced protection from a longer interval while at the same time minimizing the risk of infection due to having protection from only 1 dose. It also minimizes the risk of myocarditis/pericarditis .

    Refer to the Additional dose and Booster dose sections for information on the interval between the initial series and additional or booster doses.

    Vaccination During Pregnancy And Breastfeeding

    People who are pregnant and breastfeeding should be vaccinated with COVID-19 vaccines . As for all individuals, mRNA vaccines are the preferred option because of their higher efficacy and because they are not known to carry a risk of VITT. There is also more safety data associated with mRNA vaccines in pregnancy than with viral vector vaccines.

    Table 1 provides summary of recommendations of products and doses by age.

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    How Long Do We Have To Wait Between Vaccine Doses

    The answer to this question varies depending on which vaccine you get. There are two vaccines currently being givenPfizer and Modernaand they have slightly different timelines.

    Pfizer vaccine doses are administered 21 days apart and Moderna doses are 28 days apart, says Dr. Gordon. However, if you are unable to schedule your second dose at these intervals, according to the CDC, the second dose may be given up to six weeks after the first dose, and the series does not need to be restarted if the second dose is given later than 21 days or 28 days .

    So while you should do your absolute best to get your second dose based on the recommended timeline, its still important to get your second dose even if youre a little bit overdue. That being said, we dont currently know what efficacy looks like beyond 42 days for both Pfizer and Moderna, according to Dr. Noble.

    Once both doses have been administered, when will you have full protection It takes approximately two weeks after the second dose to build your immune system up to the maximum vaccine benefit, says Dr. Gordon.

    Related: Do You Still Need a Vaccine If Youve Already Had COVID?

    Full List Of Ingredients

    COVID-19 Vaccine: Why You Need Two Doses for Pfizer and Moderna

    The Moderna COVID-19 vaccine contains the following ingredients:

    Type of Ingredient

    • Nucleoside-modified mRNA encoding the viral spike glycoprotein of SARS-CoV-2

    Purpose

    Provides instructions the body uses to build a harmless piece of a protein from the virus that causes COVID-19. This protein causes an immune response that helps protect the body from getting sick with COVID-19 in the future.

    Type of Ingredient

    • SM-102: heptadecane-9-yl 8- hexyl) amino) octanoate

    Purpose

    Work together to help the mRNA enter cells.

    Type of Ingredient

    Salt, sugar, acid stabilizers, and acid

    Ingredient

    • Acetic acid

    Purpose

    Work together to help keep the vaccine molecules stable while the vaccine is manufactured, frozen, shipped, and stored until it is ready to be given to a vaccine recipient.

    Messenger ribonucleic acid :Nucleoside-modified mRNA encoding the viral spike glycoprotein of SARS-CoV-2

    PurposeProvides instructions the body uses to build a harmless piece of a protein from the virus that causes COVID-19. This protein causes an immune response that helps to protect the body from getting sick with COVID-19 in the future.

    Lipids :

    • SM-102: heptadecane-9-yl 8- hexyl) amino) octanoate

    PurposeWork together to help the mRNA enter cells

    Salt, sugar, acid stabilizers, and acid:

    • Sodium acetate
    • Acetic acid

    PurposeWork together to help keep the vaccine molecules stable while the vaccine is manufactured, frozen, shipped, and stored until it is ready to be given to a vaccine recipient.

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    Viral Vector Vaccine Interval

    In an exploratory analysis of a Phase 3 randomized controlled trial of the Oxford-AstraZeneca COVID-19 vaccine, investigators evaluated the impact of variable timing of the second dose of vaccine. In this analysis, vaccine efficacy against primary symptomatic COVID-19 was higher with longer dose intervals. Vaccine efficacy was 55.1% when the interval between the two doses was less than 6 weeks and 81.3% when the interval was more than 12 weeks .

    What You Should Still Do

    Your vaccination statusand the status of those around youcan have a big impact on your daily activities. The following guidelines can help you make safe choices during social situations to ensure everyones safety.

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    Q How Much Will This Vaccine Cost Me Is It Covered By My Insurance

    A. There is no cost for the vaccine. However, vaccination providers can charge an administration fee for giving the shot that is reimbursed by the patients public or private insurance company or, for uninsured patients, by the Health Resources and Services Administration at the U.S. Department of Health and Human Services. No one can be denied a vaccine if they are unable to pay a vaccine administration fee.

    Why Do Immunocompromised People Need An Additional Dose Of The Covid

    How well do first and second vaccine doses work against Covid

    For a vaccine to protect you, it must activate your immune system. In some immunocompromised patients, this ability is impaired, so an additional dose can boost the immune response.

    According to the CDC, among severely immunocompromised people who had undergone solid organ transplant and had virtually no protection after receiving two doses of the Pfizer-BioNTech COVID-19 vaccine or Moderna COVID-19 vaccine, 30 to 50% developed antibodies protecting them from COVID-19 after getting an additional dose.

    MSK researchers have found that the COVID-19 vaccines may not be as effective in people with certain blood cancers. A study led by medical oncologist David Chung found that people with blood cancers have a weakened antibody response to the vaccines, both due to the cancer itself and because of treatments for the disease. Another study, led by Roni Tamari and Gunjan Shah, found that people who had received bone marrow transplants or other cellular therapies for their cancer within the previous year also got less protection from the vaccines.

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    Vaccinating Immunocompromised People And People With Autoimmune Disease

    People who are immunocompromised and people with autoimmune diseases should be vaccinated with COVID-19 vaccines . As for all individuals, mRNA vaccines are the preferred option because of their higher efficacy and because they are not known to carry a risk of VITT and other serious adverse events.

    A third dose is recommended for people who are moderately or severely immunocompromised. It should be given at least 28 days after the primary series. A booster dose is also recommended at least 6 months after the third dose.

    To minimize the risk of myocarditis/pericarditis, NACI has indicated that Pfizer-BioNTech Comirnaty is the preferred vaccine for the primary series in those 12 to 29 years of age. It may also be the preferred product for the booster dose in those 18 to 29 years of age. However, NACI notes that moderately and severely immunocompromised individuals may benefit from the slightly higher antibody levels generated and slightly higher vaccine effectiveness provided by the Moderna 100 mcg vaccine compared to the Pfizer-BioNTech 30mcg vaccine. Moderna Spikevax may be considered for those who are moderately or severely immunocompromised based on clinical judgment.

    Table 1 provides a summary of recommendations of products and doses by age.

    Should I Get An Additional Dose If Ive Had A Breakthrough Infection After Previously Being Vaccinated

    The safety of an additional dose in people whove had COVID-19 breakthrough infections is not known, therefore an additional dose for those patients is not recommended at this time. Some patients in whom initial vaccine responses are expected to be severely blunted, such as stem cell transplant or CAR-T recipients or those treated with B-cell depleting therapies, may benefit from an additional dose after breakthrough infection. Discuss your situation with your clinical care team.

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    What Is The Difference Between A Booster And An Additional Dose

    A COVID-19 booster is given when a person has completed their vaccine series, and protection against the virus has decreased over time. Depending on the original series you had, some details will vary. Please review the booster eligibility information above and talk to your health care provider if you are not sure if you meet these guidelines. Please note, if you receive the Moderna booster, you will receive half of the original Moderna dose.

    An additional dose is administered to people with moderately to severely compromised immune systems. This additional dose is intended to improve immunocompromised peoples response to their initial vaccine series. Depending on the original series given, some details will vary. Please review the additional dose eligibility information and talk to your health care provider if you are not sure if you meet these guidelines.

    Which Booster Should You Get

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    For people ages 16-17, Pfizer is the only approved booster at this time.

    For people ages 18 and up, regardless of which COVID-19 vaccine you received for your initial vaccinations, your booster can be any of the COVID-19 vaccines authorized in the United States. The CDCs recommendations now allow mix and match dosing for booster shots.

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    Safety And Adverse Events

    Evidence on vaccine safety is available from COVID-19 clinical trials and post-licensure COVID-19 vaccine pharmacovigilance, which is ongoing.

    For reported side effects following COVID-19 vaccination in Canada refer to the weekly report.

    Refer to Vaccine Safety and pharmacovigilance and Adverse Events Following Immunization in Part 2 for additional information on vaccine safety and for definitions of AEFIs.

    Do I Qualify For A Third Dose Of The Covid

    The CDC recommends a third dose for patients who are moderately or severely immunocompromised. This includes those with the following conditions:

    • Active or recent treatment for cancer
    • Previous stem cell transplant or CAR T-cell therapy
    • Previous solid organ transplant
    • Moderate or severe primary immunodeficiency
    • Advanced or untreated HIV infection
    • Active treatment with immune-suppressing medications, including high-dose corticosteroids, chemotherapy, tumor necrosis factor inhibitors, and other biologic agents that suppress or modulate the immune system

    This recommendation only applies to individuals who received an mRNA vaccine, in other words, the Pfizer or Moderna vaccine. At this time, the CDC is not recommending an additional dose for patients who received the Johnson & Johnson/Janssen vaccine, even if they are immunocompromised. However, those who received the J& J/Janssen vaccine are now eligible for a booster shot if they received their initial dose at least 2 months ago.

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    Q What Happens If They Run Out Of The Vaccine Before I Get My Second Shot

    A. CDC is structuring shipments in such a way that 21 or 28 days after the first shipment, the same number of doses will be shipped, so providers will have enough vaccine for a second dose. The 21- or 28-day requirement between doses is a minimum requirement, not a maximum. If, for some reason, you are unable to receive the second dose at the recommended interval, you can receive the second dose at a later date.

    Pfizer Vaccine For 5 To 11 Year Olds

    Canada vaccine panel recommends extending interval between COVID

    On 5 December 2021, the Therapeutic Goods Administration provisionally approved the Comirnaty vaccine for children aged 5 to 11 years .

    The TGAs provisional approval of Pfizer for children was based on a careful evaluation of available data to support its safety and efficacy among this age group.

    Vaccinating children can help protect children from getting COVID-19. It can also help prevent children passing the virus onto younger siblings, parents, grandparents and the wider community.

    The paediatric vaccine dose of Pfizer for children is one third of the dose for people aged 12 and over.

    Children aged 5 to 11 years will receive a 2-dose primary course of vaccination, given 8 weeks apart.

    Parents, carers and guardians can book appointments through the Vaccine Clinic Finder. If you cant find an appropriate appointment, please check back regularly as more appointments will become available.

    Note that not all vaccine providers will administer Pfizer to children aged 5 to 11 years.

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    Viral Vector Vaccines And Venous Thromboembolism

    Viral vector vaccines have very rarely been associated with venous thromboembolism.

    Venous thromboembolism can cause blood clots in the deep veins such as in the legs, arms or groin. The clots can embolize to the lungs, causing serious illness. Symptoms include leg pain, leg swelling, persistent abdominal pain, shortness of breath and chest pain.

    Along with NACI’s preference for mRNA vaccines, consider the patient’s underlying risk of venous thromboembolism if considering a viral vector vaccine.

    Patients receiving a viral vector vaccine should be advised of the risk of venous thromboembolism and to immediately seek health care if symptoms develop.

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