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BumRushDaShow

(128,374 posts)
Wed Oct 20, 2021, 05:12 PM Oct 2021

The F.D.A. authorizes Moderna and J.&J. boosters and allows a mix-and-match booster strategy.

Source: New York Times

WASHINGTON — The Food and Drug Administration on Wednesday authorized booster shots for tens of millions of recipients of Moderna’s two-dose coronavirus vaccine and the roughly 15 million who got Johnson & Johnson’s single-dose shot, significantly expanding the nation’s campaign to boost protection for vulnerable people. The agency also updated its authorizations for all three vaccines — Moderna, Johnson & Johnson and Pfizer-BioNTech — to allow medical providers to boost people with a different Covid-19 vaccine than the one they initially received, a strategy known as “mix and match.”

That update may dampen interest in Johnson & Johnson’s vaccine, which studies have found provides less protection than the other two. Providers will have the option of offering a Moderna or Pfizer-BioNTech booster, which could trigger a more substantial jump in protective antibodies. The regulators, who already authorized boosters for high-risk Pfizer-BioNTech recipients last month, did not recommend any one vaccine over another as a booster. They also remained silent on whether it is preferable to stick with the same vaccine when possible.

The latest authorizations arrived in the middle of a busy stretch of regulatory decisions on vaccines. The F.D.A. is expected in the coming weeks to decide on whether Pfizer-BioNTech’s vaccine should be authorized for children ages 5 to 11. The agency’s independent vaccine committee is set to vote Tuesday to consider the matter and make a recommendation.

Regulators may also decide as early as November whether to authorize boosters for younger Americans who are not at high risk. While many vaccine experts have questioned whether younger, healthy people need booster shots, some advisory committee members last week urged the agency to move to expand eligibility.

Read more: https://www.nytimes.com/2021/10/20/us/politics/fda-mix-match-covid-booster-shots.html



CDC ACIP discussing this tomorrow.

FDA's press release - https://www.fda.gov/news-events/press-announcements/coronavirus-covid-19-update-fda-takes-additional-actions-use-booster-dose-covid-19-vaccines

FDA News Release
Coronavirus (COVID-19) Update: FDA Takes Additional Actions on the Use of a Booster Dose for COVID-19 Vaccines


For Immediate Release: October 20, 2021

Today, the U.S. Food and Drug Administration took action to expand the use of a booster dose for COVID-19 vaccines in eligible populations. The agency is amending the emergency use authorizations (EUA) for COVID-19 vaccines to allow for the use of a single booster dose as follows:

  • The use of a single booster dose of the Moderna COVID-19 Vaccine that may be administered at least 6 months after completion of the primary series to individuals:

  • 65 years of age and older
  • 18 through 64 years of age at high risk of severe COVID-19
  • 18 through 64 years of age with frequent institutional or occupational exposure toSARS-CoV-2


  • The use of a single booster dose of the Janssen (Johnson and Johnson) COVID-19 Vaccine may be administered at least 2 months after completion of the single-dose primary regimen to individuals 18 years of age and older.
  • The use of each of the available COVID-19 vaccines as a heterologous (or “mix and match”) booster dose in eligible individuals following completion of primary vaccination with a different available COVID-19 vaccine.
  • To clarify that a single booster dose of the Pfizer-BioNTech COVID-19 Vaccine may be administered at least 6 months after completion of the primary series to individuals 18 through 64 years of age with frequent institutional or occupational exposure to SARS-CoV-2.


  • “Today’s actions demonstrate our commitment to public health in proactively fighting against the COVID-19 pandemic,” said Acting FDA Commissioner Janet Woodcock, M.D. “As the pandemic continues to impact the country, science has shown that vaccination continues to be the safest and most effective way to prevent COVID-19, including the most serious consequences of the disease, such as hospitalization and death. The available data suggest waning immunity in some populations who are fully vaccinated. The availability of these authorized boosters is important for continued protection against COVID-19 disease.”

    “The amendments to the emergency use authorizations to include a single booster dose in eligible populations are based on the available data and information and follows the input from the members of our advisory committee who were supportive of the use of a booster dose of these vaccines in eligible populations,” said Peter Marks, M.D., Ph.D., director of the FDA’s Center for Biologics Evaluation and Research. “We are also taking action today to include the use of mix and match boosters to address this public health need. We will work to accrue additional data as quickly as possible to further assess the benefits and risks of the use of booster doses in additional populations and plan to update the healthcare community and public with our determination in the coming weeks.”

    Authorization of Moderna COVID-19 Vaccine Booster Dose


    To support the authorization for emergency use of a single booster dose of the Moderna COVID-19 Vaccine, the FDA analyzed immune response data from 149 participants 18 years of age and older from the original clinical studies who received a booster dose at least 6 months after their second dose and compared it to the immune responses of 1,055 study participants after completing their two-dose series. The antibody response of the 149 participants against SARS-CoV-2 virus 29 days after a booster dose of the vaccine demonstrated a booster response.

    The FDA also evaluated an additional analysis from Moderna comparing the rates of COVID-19 accrued during the Delta variant surge during July and August 2021, which suggest that there is a waning of vaccine effectiveness over time.

    Safety was evaluated in 171 participants 18 years of age and older who were followed for an average of approximately six months. The most commonly reported side effects by the clinical trial participants who received the booster dose of the vaccine were pain at the injection site, tiredness, headache, muscle and/or joint pain, chills, swollen lymph nodes in same arm as the injection, nausea and vomiting, and fever. Of note, swollen lymph nodes in the underarm were observed more frequently following the booster dose than after the primary two-dose series.

    Ongoing analyses from the FDA and the Centers for Disease Control and Prevention (CDC) safety surveillance systems have identified increased risks of inflammatory heart conditions, myocarditis and pericarditis, following vaccination with the Moderna COVID-19 vaccine, particularly following the second dose. Typically, onset of symptoms has been a few days following vaccination. The observed risk is higher among males under 40 years of age, particularly males 18 through 24, than among females and older males.

    The Moderna COVID-19 single booster dose is half of the dose that is administered for a primary series dose and is administered at least six months after completion of a primary series of the vaccine.

    Authorization of Janssen (Johnson and Johnson) COVID-19 Vaccine Booster Dose

    The authorization for emergency use of a single booster dose of the Janssen COVID-19 Vaccine is based on the FDA’s evaluation of immune response data in 39 participants from a clinical trial including 24 participants who were 18 through 55 years of age and 15 participants who were 65 years of age and older. The study participants received a booster dose approximately 2 months after their first dose, and the results demonstrated a booster response.

    Overall, approximately 9,000 clinical trial participants have received two doses of Janssen COVID-19 Vaccine administered at least two months apart and of these, approximately 2,700 have had at least two months of safety follow-up after the booster dose. Janssen’s safety analyses from these studies have not identified new safety concerns.

    Earlier analyses from the FDA and CDC safety surveillance systems suggest an increased risk of a serious and rare type of blood clot in combination with low blood platelets following administration of the Janssen COVID-19 vaccine. This serious condition is called thrombocytopenia syndrome (TTS). People who developed TTS after receiving the vaccine had symptoms that began about one to two weeks after vaccination. Reporting of TTS has been highest in females ages 18 through 49 years. In addition, safety surveillance suggests an increased risk of a specific serious neurological disorder called Guillain Barré syndrome, within 42 days following receipt of the Janssen COVID-19 Vaccine.

    Authorization of “Mix and Match” Booster Dose

    Today, the FDA is also authorizing the use of heterologous (or “mix and match”) booster dose for currently available (i.e., FDA-authorized or approved) COVID-19 vaccines. Following a presentation of clinical trial data from the National Institute of Allergy and Infectious Diseases, the Vaccines and Related Biological Products Advisory Committee’s discussion of information submitted for consideration, along with the agency’s evaluation of the available data, the FDA has determined that the known and potential benefits of the use of a single heterologous booster dose outweigh the known and potential risks of their use in eligible populations.

    A single booster dose of any of the available COVID-19 vaccines may be administered as a heterologous booster dose following completion of primary vaccination with a different available COVID-19 vaccine. The eligible population(s) and dosing interval for a heterologous booster dose are the same as those authorized for a booster dose of the vaccine used for primary vaccination.

    For example, Janssen COVID-19 Vaccine recipients 18 years of age and older may receive a single booster dose of Janssen COVID-19 Vaccine, Moderna COVID-19 Vaccine (half dose) or Pfizer-BioNTech COVID-19 Vaccine at least two months after receiving their Janssen COVID-19 Vaccine primary vaccination.

    In another example, Moderna COVID-19 Vaccine and Pfizer-BioNTech COVID-19 vaccine recipients falling into one of the authorized categories for boosters (65 years of age and older, 18 through 64 years of age at high-risk of severe COVID-19, and 18 through 64 years of age with frequent institutional or occupational exposure to SARS-CoV-2) may receive a booster dose of Moderna COVID-19 Vaccine (half dose), Pfizer-BioNTech COVID-19 Vaccine or Janssen COVID-19 Vaccine at least six months after completing their primary vaccination.

    The agency recognizes that health care providers and COVID-19 vaccine recipients will have questions about booster doses. The individual fact sheets for each available vaccine provide relevant information for health care providers and the vaccine recipients. The agency encourages health care providers to also follow the recommendations that will be provided by the CDC following a meeting of their Advisory Committee on Immunization Practices and formal recommendations signed by the CDC director.

    Related Information

  • Moderna COVID-19 Vaccine
  • Janssen COVID-19 Vaccine
  • Pfizer-BioNTech COVID-19 Vaccine
  • COVID-19 Vaccines
  • Emergency Use Authorization for Vaccines Explained


  • ###

    The FDA, an agency within the U.S. Department of Health and Human Services, protects the public health by assuring the safety, effectiveness, and security of human and veterinary drugs, vaccines and other biological products for human use, and medical devices. The agency also is responsible for the safety and security of our nation’s food supply, cosmetics, dietary supplements, products that give off electronic radiation, and for regulating tobacco products.
    18 replies = new reply since forum marked as read
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    The F.D.A. authorizes Moderna and J.&J. boosters and allows a mix-and-match booster strategy. (Original Post) BumRushDaShow Oct 2021 OP
    J&J getting my Moderna! GPV Oct 2021 #1
    CDC still has to sign off on it (they are meeting tomorrow to discuss) BumRushDaShow Oct 2021 #2
    I'm betting they will. :) GPV Oct 2021 #8
    I expect they will. BumRushDaShow Oct 2021 #9
    I may be mistaken but JJ seems to last the longest (with less efficacy... Cetacea Oct 2021 #16
    So when does Moderna get full authorization... ananda Oct 2021 #3
    They submitted their full package on August 25, 2021 BumRushDaShow Oct 2021 #4
    Oh, I see. ananda Oct 2021 #10
    I had 2 dose Pfizer, wanted Moderna booster scipan Oct 2021 #5
    The differences in dosages (i.e., the quantity of the active biologic) for the mRNA vaccines are - BumRushDaShow Oct 2021 #7
    Thanks for the information. scipan Oct 2021 #17
    You are welcome BumRushDaShow Oct 2021 #18
    This message was self-deleted by its author scipan Oct 2021 #6
    Color me surprised! BlueIdaho Oct 2021 #11
    I think they did it because BumRushDaShow Oct 2021 #12
    mRNA is not very stable, so vaccine itself will be quickly degraded once in the body. LisaL Oct 2021 #13
    i got my moderna booster yesterday rdking647 Oct 2021 #14
    I expect as they begin to settle on indications for use of these vaccines BumRushDaShow Oct 2021 #15

    BumRushDaShow

    (128,374 posts)
    9. I expect they will.
    Wed Oct 20, 2021, 07:14 PM
    Oct 2021

    They did finally post the final agenda for today's meeting (mostly on other vaccines with a vote at the end on pneumococcus vaccine recommendations) and tomorrow (all day on Moderna/Janssen (J&J) COVID-19 vaccines and mix/match, with a vote at the end) - https://www.cdc.gov/vaccines/acip/meetings/downloads/agenda-archive/agenda-2021-10-20-21-508.pdf

    Cetacea

    (7,367 posts)
    16. I may be mistaken but JJ seems to last the longest (with less efficacy...
    Thu Oct 21, 2021, 09:13 AM
    Oct 2021

    and that their booster would bring the vaccine into the 94 percent effectiveness range.

    scipan

    (2,336 posts)
    5. I had 2 dose Pfizer, wanted Moderna booster
    Wed Oct 20, 2021, 06:35 PM
    Oct 2021

    because it is stronger. But if it’s only a half dose I guess Pfizer is now the stronger one?

    I’m willing to have some fairly serious side effects if it gives me a better immunity as I’m old and didn’t get much in the way of side effects with the 2 Pfizers .

    BumRushDaShow

    (128,374 posts)
    7. The differences in dosages (i.e., the quantity of the active biologic) for the mRNA vaccines are -
    Wed Oct 20, 2021, 06:53 PM
    Oct 2021

    ug = micrograms
    mg = milligrams

    (where 1000 ug = 1 mg)

    Pfizer (full dose) = 30 ug
    Moderna (full dose) = 100 ug
    Moderna (half dose) = 50 ug

    One of the things bandied around among the various committees was wanting to determine whether the dosage amounts and/or the time between doses have made the differences that have been seen between the two vaccines over time.

    BumRushDaShow

    (128,374 posts)
    18. You are welcome
    Thu Oct 21, 2021, 04:12 PM
    Oct 2021

    They just had a presentation that clarified some things (for me) regarding how they were looking at doing the boosters (considering the difference in Moderna doses).



    ETA - some additional discussion on this -





    (edit again to note that the above slide are what the CDC ACIP is discussing right now, as I know the OP is about what FDA did earlier)

    Response to BumRushDaShow (Original post)

    BlueIdaho

    (13,582 posts)
    11. Color me surprised!
    Wed Oct 20, 2021, 10:01 PM
    Oct 2021

    I guessed that both Moderna and J&J would get the go ahead but I never imagined the mix and match option would also get the go ahead this quickly.

    BumRushDaShow

    (128,374 posts)
    12. I think they did it because
    Thu Oct 21, 2021, 06:50 AM
    Oct 2021

    they are already "mix/matching" many of the other vaccines that require multiple doses over time. For example the TDaP (Tetanus, Diptheria, Pertussis) - which usually requires a booster about every 10 or so years, and there are actually 12 variations from 2 manufacturers for that shot in different combinations, including for children or adults.

    I think the hesitancy on doing it initially was because there is a brand new vaccine platform (mRNA) being used that is essentially "untested" on the "grand scale" like is happening at the moment, so they weren't sure how that would interact with the traditional cell-based vaccines (whether they are live/attenuated virus, dead virus, viral fragments, or even now, using adenoviruses to mimic the target virus).

    Right now, the U.S. only has 3 COVID-19 vaccines either fully-approved or approved via an EUA - and 2 of them are mRNA-based. So the "test" would be the Janssen (J&J), which is an adenovirus type, mixed with one of the mRNA ones. They did that and found a good response and nothing out of the ordinary (so far).

    The rest of the COVID-19 vaccines being used around the world (the highest number so far being AstraZeneca's vaccine) are adenovirus types (like Janssen's).

    LisaL

    (44,972 posts)
    13. mRNA is not very stable, so vaccine itself will be quickly degraded once in the body.
    Thu Oct 21, 2021, 07:27 AM
    Oct 2021

    So I am not sure what they were afraid of-there will be no interacting, since mRNA vaccine itself is long gone by the couple of months.

     

    rdking647

    (5,113 posts)
    14. i got my moderna booster yesterday
    Thu Oct 21, 2021, 07:36 AM
    Oct 2021

    because they hadnt officially authorized the 1/2 dose they gave me the full dose

    BumRushDaShow

    (128,374 posts)
    15. I expect as they begin to settle on indications for use of these vaccines
    Thu Oct 21, 2021, 08:30 AM
    Oct 2021

    they may keep the "full dose" Moderna recommendation currently being applied per the EUA (for specific ages/medical conditions) and then have the 1/2 dose for everyone else.

    It's sortof similar to the flu vaccines where there is a "regular dose" one and then a "high dose" one recommended for 65+. The pneumonia vaccines have the same situation, where something like Prevnar 13 is used up until ~age 50 and then the Pneumovax 23 is recommended (they were actually discussing the various pneumonia vaccines and variant coverage yesterday).

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