
In a new document posted ahead of a key meeting of the US Food and Drug Administration’s vaccine advisers, Pfizer says its vaccine is safe and 90.7% effective against symptomatic Covid-19 in children ages 5 to 11.
In the trial, which included around 2,000 children, there were three Covid-19 cases among the group that received the vaccine and 16 cases in the placebo group. In the trial, twice as many children received the vaccine as the placebo.
Pfizer/BioNTech are seeking FDA emergency use authorization of a two-dose regimen of their 10-microgram dose for children ages 5 to 11. The two doses would be administered three weeks apart. Last month, Pfizer released details of a Phase 2/3 trial that showed its Covid-19 vaccine was safe and generated a “robust” antibody response in children ages 5 to 11. The trial included 2,268 participants ages 5 to 11.
Participants’ immune responses were measured by looking at neutralizing antibody levels in their blood and comparing those levels to a control group of 16- to 25-year-olds who were given a two-dose regimen with the larger 30-microgram dose. Pfizer said the levels compared well with older people who received the larger dose, demonstrating a “strong immune response in this cohort of children one month after the second dose.”
The FDA’s Vaccines and Related Biological Products Advisory Committee is scheduled to meet October 26 to discuss whether to recommend the vaccine for authorization for those ages 5 to 11.
If authorized, this would be the first Covid-19 vaccine for younger children. The Pfizer/BioNTech vaccine is approved for people age 16 and older and has an EUA for people ages 12 to 15.
The data summarized from this Phase 2/3 study, which is enrolling children 6 months to 11 years of age, was for 2,268participants who were 5 to 11 years of age and received a 10 µg dose level in a two-dose regimen. In the trial, the SARS-CoV-2–neutralizing antibody geometric mean titer (GMT) was 1,197.6 (95% confidence interval [CI, 1106.1, 1296.6]), demonstrating strong immune response in this cohort of children one month after the second dose.
This compares well (was non-inferior) to the GMT of 1146.5 (95% CI: 1045.5, 1257.2) from participants ages 16 to 25 years old, used as the control group for this analysis and who were administered a two-dose regimen of 30 µg. Further, the COVID-19 vaccine was well tolerated, with side effects generally comparable to those observed in participants 16 to 25 years of age.
Pfizer and BioNTech plan to share these data with the U.S. Food and Drug Administration (FDA), European Medicines Agency (EMA) and other regulators as soon as possible. For the United States, the companies expect to include the data in a near-term submission for Emergency Use Authorization (EUA) as they continue to accumulate the safety and efficacy data required to file for full FDA approval in this age group.
A request to the EMA to update the EU Conditional Marketing Authorization is also planned. Topline readouts for the other two age cohorts from the trial – children 2-5 years of age and children 6 months to 2 years of age – are expected as soon as the fourth quarter of this year.
Pfizer and BioNTech plan to share these data with the U.S. Food and Drug Administration (FDA), European Medicines Agency (EMA) and other regulators as soon as possible. For the United States, the companies expect to include the data in a near-term submission for Emergency Use Authorization (EUA) as they continue to accumulate the safety and efficacy data required to file for full FDA approval in this age group.
A request to the EMA to update the EU Conditional Marketing Authorization is also planned. Topline readouts for the other two age cohorts from the trial – children 2-5 years of age and children 6 months to 2 years of age – are expected as soon as the fourth quarter of this year. Pfizer and BioNTech plan to submit data from the full Phase 3 trial for scientific peer-reviewed publication.
By: Jamie Gumbrecht CNN Newsource
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Patients should always ask their healthcare providers for medical advice about adverse events. Individuals are encouraged to report negative side effects of vaccines to the US Food and Drug Administration (FDA) and the Centers for Disease Control and Prevention (CDC). Visit http://www.vaers.hhs.gov or call 1-800-822-7967. In addition, side effects can be reported to Pfizer Inc. at www.pfizersafetyreporting.com
or by calling 1-800-438-1985.
Please click here for full Prescribing Information (16+ years of age). Please click here for Fact Sheet for Vaccination Providers (12+ years of age)
- Bulik BS (23 December 2020). “The inside story behind Pfizer and BioNTech’s new vaccine brand name, Comirnaty”. FiercePharma. Archived from the original on 25 December 2020. Retrieved 25 December 2020.
- “Swissmedic grants authorisation for the first COVID-19 vaccine in Switzerland” (Press release). Swiss Agency for Therapeutic Products (Swissmedic). 19 December 2020. Archived from the original on 10 January 2021. Retrieved 19 December 2020.
- “Comirnaty EPAR”. European Medicines Agency (EMA). Archived from the original on 17 March 2021. Retrieved 23 December 2020.
- “Comirnaty COVID-19 mRNA Vaccine”. Comirnaty Global. Archived from the original on 30 December 2020. Retrieved 31 December 2020.
- “FDA Approves First COVID-19 Vaccine” (Press release). U.S. Food and Drug Administration (FDA). 23 August 2021. Archived from the original on 23 August 2021. Retrieved 23 August 2021.
- “Comirnaty”. Therapeutic Goods Administration (TGA). 25 January 2021. Archived from the original on 1 February 2021. Retrieved 25 January 2021.
- “Comirnaty (BNT162b2 [mRNA]) COVID-19 Vaccine Product Information” (PDF). Therapeutic Goods Administration (TGA). Archived from the original on 2 February 2021. Retrieved 25 January 2021.
- Australian Public Assessment Report for BNT162b2 (mRNA) (PDF) (Report). Therapeutic Goods Administration (TGA). Archived (PDF) from the original on 26 January 2021. Retrieved 25 January 2021.
- “Vacina da Pfizer é a 1ª contra a Covid a obter registro definitivo no Brasil”. G1 (in Portuguese). 23 February 2021. Archived from the original on 17 March 2021. Retrieved 20 March 2021.
- “Regulatory Decision Summary – Comirnaty”. Health Canada. Retrieved 18 September 2021.
- “Pfizer-BioNTech Comirnaty COVID-19 vaccine”. Health Canada. 9 December 2020. Retrieved 18 September 2021.
- “Drug and vaccine authorizations for COVID-19: List of authorized drugs, vaccines and expanded indications”. Health Canada. 17 September 2020. Retrieved 17 September 2021.
- “Information for Healthcare Professionals on Pfizer/BioNTech COVID-19 vaccine”. Medicines and Healthcare products Regulatory Agency (MHRA). 10 December 2020. Archived from the original on 15 March 2021. Retrieved 21 December 2020.
- “Conditions of Authorisation for Pfizer/BioNTech COVID-19 vaccine”. Medicines and Healthcare products Regulatory Agency (MHRA). 31 December 2020. Archived from the original on 26 February 2021. Retrieved 8 January 2021.
- “Pfizer-Biontech COVID-19 Vaccine- bnt162b2 injection, suspension”. DailyMed. Archived from the original on 29 January 2021. Retrieved 14 December 2020.
- “Pfizer–BioNTech COVID-19 Vaccine EUA Letter of Authorization” (PDF). U.S. Food and Drug Administration (FDA). 12 August 2021. Archived from the original on 14 August 2021. Retrieved 13 August 2021.
This article incorporates text from this source, which is in the public domain.
- “Pfizer–BioNTech COVID-19 Vaccine Standing Orders for Administering Vaccine to Persons 12 Years of Age and Older” (PDF). Centers for Disease Control and Prevention (CDC). Archived (PDF) from the original on 14 August 2021. Retrieved 13 August 2021.
- “South Africa approves Pfizer Covid-19 vaccine for emergency use”. Archived from the original on 18 March 2021. Retrieved 18 March 2021.
- Nkanjeni U. “Pfizer-BioNTec approved for emergency use in SA: here is what you need to know about the vaccine”. TimesLIVE. Archived from the original on 19 April 2021. Retrieved 19 March 2021.
- Browne R (11 November 2020). “What you need to know about BioNTech – the European company behind Pfizer’s Covid-19 vaccine”. CNBC. Archived from the original on 4 March 2021. Retrieved 14 January 2021.
- Thomas K, Gelles D, Zimmer C (9 November 2020). “Pfizer’s early data shows vaccine is more than 90% effective”. The New York Times. Archived from the original on 23 November 2020. Retrieved 9 November 2020.
- “Regulatory Decision Summary – Pfizer-BioNTech COVID-19 Vaccine”. Health Canada. Archived from the original on 12 May 2021. Retrieved 11 May 2021.
- “First COVID-19 vaccine approved for children aged 12 to 15 in EU”. European Medicines Agency (EMA) (Press release). 28 May 2021. Archived from the original on 28 May 2021. Retrieved 29 May 2021.
- “Information for UK recipients on Pfizer/BioNTech COVID-19 vaccine”. Medicines and Healthcare products Regulatory Agency (MHRA). 8 December 2020. Archived from the original on 30 May 2021. Retrieved 29 May 2021.
- Walsh EE, Frenck RW, Falsey AR, Kitchin N, Absalon J, Gurtman A, et al. (October 2020). “Safety and Immunogenicity of Two RNA-Based Covid-19 Vaccine Candidates”. The New England Journal of Medicine. 383 (25): 2439–50. doi:10.1056/NEJMoa2027906. PMC 7583697. PMID 33053279.
- “Study to Describe the Safety, Tolerability, Immunogenicity, and Efficacy of RNA Vaccine Candidates Against COVID-19 in Healthy Individuals”. ClinicalTrials.gov. 30 April 2020. Archived from the original on 11 October 2020. Retrieved 5 August 2021.
- Palca J (9 November 2020). “Pfizer says experimental COVID-19 vaccine is more than 90% effective”. NPR.org. NPR. Archived from the original on 9 November 2020. Retrieved 9 November 2020.
- Herper M (9 November 2020). “Covid-19 vaccine from Pfizer and BioNTech is strongly effective, early data from large trial indicate”. Stat News. Archived from the original on 9 November 2020. Retrieved 9 November 2020.
- Ellis R. “CDC: Gap Between Vaccine Doses Could Be 6 Weeks”. WebMD. Archived from the original on 4 May 2021. Retrieved 8 July 2021.
- “Canada vaccine panel recommends 4 months between COVID doses”. ABC News. 4 March 2021. Archived from the original on 26 July 2021. Retrieved 9 July 2021.
- Public Health Agency of Canada (2 July 2021). Recommendations on the use of COVID-19 vaccines (PDF). Health Canada (Report). Archived (PDF) from the original on 23 June 2021. Retrieved 9 July 2021.
- “Update on our COVID-19 vaccine development program with BNT162b2” (PDF) (Press release). BioNTech. 2 December 2020. Archived from the original on 3 December 2020. Retrieved 12 December 2020.
- “Pfizer and BioNTech Confirm High Efficacy and No Serious Safety Concerns Through Up to Six Months Following Second Dose in Updated Topline Analysis of Landmark COVID-19 Vaccine Study”. BioNTech (Press release). 1 April 2021. Archived from the original on 4 April 2021. Retrieved 11 April 2021.
- CDC (20 September 2021). “Information about the Pfizer-BioNTech COVID-19 Vaccine”. Centers for Disease Control and Prevention. Retrieved 27 September 2021.
- Polack FP, Thomas SJ, Kitchin N, Absalon J, Gurtman A, Lockhart S, et al. (December 2020). “Safety and Efficacy of the BNT162b2 mRNA Covid-19 Vaccine”. N Engl J Med. 383 (27): 2603–15. doi:10.1056/NEJMoa2034577. PMC 7745181. PMID 33301246.
- “Questions and Answers About Pfizer–BioNTech COVID-19 Vaccine”. Pfizer. Archived from the original on 23 December 2020. Retrieved 16 December 2020.
- “Adverse reactions to drugs”. British National Formulary. Archived from the original on 16 February 2021. Retrieved 19 December 2020.
- “Coronavirus vaccine”. National Health Service. 7 December 2020. Archived from the original on 7 December 2020. Retrieved 7 December 2020.
- “UK medicines regulator gives approval for first UK COVID-19 vaccine” (Press release). Medicines and Healthcare products Regulatory Agency (MHRA). 2 December 2020. Archived from the original on 17 March 2021. Retrieved 2 December 2020.
- Boseley S, Halliday J (2 December 2020). “UK approves Pfizer/BioNTech Covid vaccine for rollout next week”. The Guardian. Archived from the original on 2 December 2020. Retrieved 14 December 2020.
- “COVID-19 Vaccine Tracker: Pfizer/BioNTech: BNT162b2”. McGill University. Archived from the original on 8 May 2021. Retrieved 8 May 2021.
- “Pfizer–BioNTech COVID-19 Vaccine”. U.S. Food and Drug Administration (FDA). 3 February 2021. Archived from the original on 14 January 2021. Retrieved 5 February 2021.
- Thomas K (20 November 2020). “F.D.A. Clears Pfizer Vaccine, and Millions of Doses Will Be Shipped Right Away”. The New York Times. Archived from the original on 12 December 2020.
- Australian Government Department of Health (24 January 2021). “About the Pfizer/BioNTech COVID-19 vaccine”. Australian Government Department of Health. Archived from the original on 23 May 2021. Retrieved 31 May 2021.
- Howard J (23 August 2021). “FDA grants full approval to Pfizer/BioNTech Covid-19 vaccine, opening door to more vaccine mandates”. CNN. Retrieved 23 August 2021.
- “Comirnaty”. U.S. Food and Drug Administration (FDA). 23 August 2021. STN: 125742. Retrieved 23 August 2021.
- “Pfizer and BioNTech expand collaboration with U.S. to provide 500 million additional COVID-19 vaccine doses at not-for-profit price for donation to poorest countries”. 22 September 2021.
- “Pfizer and BioNTech to Supply the European Union with 200 Million Additional Doses of Comirnaty” (Press release). BioNTech. 17 February 2021. Archived from the original on 26 February 2021. Retrieved 1 March 2021.
- Kresge N (30 March 2021). “BioNTech Raises Covid Vaccine Target to 2.5 Billion Doses”. Bloomberg. Archived from the original on 11 April 2021. Retrieved 11 April 2021.
- “Pfizer–BioNTech COVID-19 Vaccine Vaccination Storage & Dry Ice Safety Handling”. Pfizer-BioNTech. Archived from the original on 24 January 2021. Retrieved 17 December 2020.
- Hopkins JS (30 March 2021). “Pfizer to Test Covid-19 Vaccine That Doesn’t Need Ultracold Storage”. The Wall Street Journal. Archived from the original on 15 May 2021. Retrieved 16 May 2021.
- Pfizer–BioNTech COVID-19 Vaccine Emergency Use Authorization Review Memorandum (PDF). U.S. Food and Drug Administration (FDA) (Report). 14 December 2020. Archived from the original on 29 January 2021. Retrieved 14 December 2020.
This article incorporates text from this source, which is in the public domain.
- “Pfizer vaccine second dose has ‘sweet spot’ after eight weeks, UK scientists say”. 23 July 2021. Retrieved 26 July 2021.
- Interim recommendations for use of the Pfizer–BioNTech COVID-19 vaccine, BNT162b2, under Emergency Use Listing (Guidance). World Health Organization. 15 June 2021. WHO/2019-nCoV/vaccines/SAGE_recommendation//BNT162b2/2021.2. Archived from the original on 29 June 2021. Retrieved 3 July 2021.
- “The WHO is right to call a temporary halt to COVID vaccine boosters”. Nature (Editorial). 596 (7872): 317. 17 August 2021. Bibcode:2021Natur.596..317.. doi:10.1038/d41586-021-02219-w. PMID 34404945. S2CID 237199262.
- “Interim statement on COVID-19 vaccine booster doses” (Press release). World Health Organization. 10 August 2021. Retrieved 26 August 2021.
- “Interim statement on booster doses for COVID-19 vaccination – Update 4 October 2021”. http://www.who.int. Retrieved 20 October 2021.
- Tartof, Sara Y.; Slezak, Jeff M.; Fischer, Heidi; Hong, Vennis; Ackerson, Bradley K.; Ranasinghe, Omesh N.; Frankland, Timothy B.; Ogun, Oluwaseye A.; Zamparo, Joann M.; Gray, Sharon; Valluri, Srinivas R.; Pan, Kaije; Angulo, Frederick J.; Jodar, Luis; McLaughlin, John M. (16 October 2021). “Effectiveness of mRNA BNT162b2 COVID-19 vaccine up to 6 months in a large integrated health system in the USA: a retrospective cohort study”. The Lancet. 398 (10309): 1407–1416. doi:10.1016/S0140-6736(21)02183-8. ISSN 0140-6736. Retrieved 20 October 2021.
- “Coronavirus (COVID-19) Update: FDA Authorizes Additional Vaccine Dose for Certain Immunocompromised Individuals”. U.S. Food and Drug Administration (FDA) (Press release). 12 August 2021. Retrieved 13 August 2021.
- “COVID-19 Vaccines for Moderately to Severely Immunocompromised People”. Centers for Disease Control and Prevention. 13 August 2021. Retrieved 13 August 2021.
- Bar-On YM, Goldberg Y, Mandel M, Bodenheimer O, Freedman L, Kalkstein N, et al. (September 2021). “Protection of BNT162b2 Vaccine Booster against Covid-19 in Israel”. The New England Journal of Medicine. Table 2. 385 (15): 1393–1400. doi:10.1056/nejmoa2114255. PMC 8461568. PMID 34525275.
This would mean that the susceptibility of a person who receives a booster dose would decrease to approximately 5% (i.e., 50% divided by 10) relative to that in an unvaccinated person and would bring the vaccine efficacy among booster recipients to approximately 95%, a value similar to the original vaccine efficacy reported against the alpha variant.
- Abu-Raddad LJ, Chemaitelly H, Butt AA (5 May 2021). “Effectiveness of the BNT162b2 Covid-19 Vaccine against the B.1.1.7 and B.1.351 Variants”. New England Journal of Medicine. 385 (2). Table 1. doi:10.1056/NEJMc2104974. PMC 8117967. PMID 33951357.
- Lopez Bernal J, Andrews N, Gower C, Gallagher E, Simmons R, Thelwall S, et al. (August 2021). “Effectiveness of Covid-19 Vaccines against the B.1.617.2 (Delta) Variant”. The New England Journal of Medicine. 385 (7): 585–594. doi:10.1056/NEJMoa2108891. PMC 8314739. PMID 34289274.
- Evans SJ, Jewell NP (August 2021). “Vaccine Effectiveness Studies in the Field”. The New England Journal of Medicine. 385 (7): 650–651. doi:10.1056/NEJMe2110605. PMC 8314732. PMID 34289269.
- Fowlkes A, Gaglani M, Groover K, Thiese MS, Tyner H, Ellingson K (27 August 2021). “Effectiveness of COVID-19 Vaccines in Preventing SARS-CoV-2 Infection Among Frontline Workers Before and During B.1.617.2 (Delta) Variant Predominance — Eight U.S. Locations, December 2020–August 2021” (PDF). MMWR. Morbidity and Mortality Weekly Report. 70 (34): 1167–9. doi:10.15585/mmwr.mm7034e4. PMC 8389394. PMID 34437521.
- Thomas SJ, Moreira ED, Kitchin N, Absalon J, Gurtman A, Lockhart S, et al. (September 2021). “Safety and Efficacy of the BNT162b2 mRNA Covid-19 Vaccine through 6 Months”. The New England Journal of Medicine. doi:10.1056/nejmoa2110345. PMC 8461570. PMID 34525277.
- Krause P, Fleming TR, Longini I, Henao-Restrepo AM, Peto R, Dean NE, et al. (12 September 2020). “COVID-19 vaccine trials should seek worthwhile efficacy”. The Lancet. 396 (10253): 741–743. doi:10.1016/S0140-6736(20)31821-3. ISSN 0140-6736. PMC 7832749. PMID 32861315.
WHO recommends that successful vaccines should show an estimated risk reduction of at least one-half, with sufficient precision to conclude that the true vaccine efficacy is greater than 30%. This means that the 95% CI for the trial result should exclude efficacy less than 30%. Guidance from the US Food and Drug Administration includes this lower limit of 30% as a criterion for vaccine licensure.
- Khoury DS, Cromer D, Reynaldi A, Schlub TE, Wheatley AK, Juno JA, et al. (May 2021). “Neutralizing antibody levels are highly predictive of immune protection from symptomatic SARS-CoV-2 infection”. Nature Medicine. 27 (7): 1205–1211. doi:10.1038/s41591-021-01377-8. ISSN 1546-170X. PMID 34002089. S2CID 234769053.
Figure 3: Protection from severe infection.
- Dagan N, Barda N, Kepten E, Miron O, Perchik S, Katz MA, et al. (April 2021). “BNT162b2 mRNA Covid-19 Vaccine in a Nationwide Mass Vaccination Setting”. New England Journal of Medicine. 384 (15). Table 2. doi:10.1056/NEJMoa2101765. PMC 7944975. PMID 33626250.
- Sheikh A, McMenamin J, Taylor B, Robertson C (14 June 2021). “SARS-CoV-2 Delta VOC in Scotland: demographics, risk of hospital admission, and vaccine effectiveness”. The Lancet. 397 (10293). Table S4. doi:10.1016/S0140-6736(21)01358-1. ISSN 0140-6736. PMC 8201647. PMID 34139198.
- Chung H, He S, Nasreen S, Sundaram ME, Buchan SA, Wilson SE, et al. (August 2021). “Effectiveness of BNT162b2 and mRNA-1273 covid-19 vaccines against symptomatic SARS-CoV-2 infection and severe covid-19 outcomes in Ontario, Canada: test negative design study”. BMJ. 374: n1943. doi:10.1136/bmj.n1943. PMC 8377789. PMID 34417165.
Tables 6 and 7
- Stowe J, Andrews N, Gower C, Gallagher E, Utsi L, Simmons R, et al. (14 June 2021). Effectiveness of COVID-19 vaccines against hospital admission with the Delta (B.1.617.2) variant (Preprint). Public Health England. Table 1. Archived from the original on 23 June 2021. Retrieved 25 June 2021 – via Knowledge Hub.
- SARS-CoV-2 variants of concern and variants under investigation in England, technical briefing 17 (PDF) (Briefing). Public Health England. 25 June 2021. GOV-8576. Archived (PDF) from the original on 25 June 2021. Retrieved 26 June 2021.
- Smith K (24 April 2021). “New CDC guidance recommends pregnant people get the COVID-19 vaccine”. CBS News. Archived from the original on 24 April 2021. Retrieved 24 April 2021.
- Shimabukuro TT, Kim SY, Myers TR, Moro PL, Oduyebo T, Panagiotakopoulos L, et al. (April 2021). “Preliminary Findings of mRNA Covid-19 Vaccine Safety in Pregnant Persons”. N Engl J Med. 384 (24): 2273–2282. doi:10.1056/NEJMoa2104983. PMC 8117969. PMID 33882218.
- “UK regulator approves Pfizer Covid vaccine for 12- to 15-year-olds”. The Guardian. 4 June 2021. Archived from the original on 4 June 2021. Retrieved 4 June 2021.
- Reynolds J. “Pfizer vaccine approved for use in children aged 12 to 15 in the UK”. The Times. ISSN 0140-0460. Archived from the original on 4 June 2021. Retrieved 4 June 2021.
- Torjesen I (May 2021). “Covid-19: Pfizer-BioNTech vaccine is “likely” responsible for deaths of some elderly patients, Norwegian review finds”. BMJ. 373: n1372. doi:10.1136/bmj.n1372. PMID 34045236. S2CID 235204094. Retrieved 12 July 2021.
- “Immunocompromised patients and COVID-19 vaccines” (PDF). NSW Health. 28 April 2021. Archived (PDF) from the original on 20 May 2021. Retrieved 2 June 2021.
- Jr, Berkeley Lovelace (20 September 2021). “Pfizer says its Covid vaccine is safe and generates robust immune response in kids ages 5 to 11”. CNBC. Retrieved 1 October 2021.
- Comirnaty: Product Information (PDF) (Report). European Medicines Agency (EMA). Archived (PDF) from the original on 24 December 2020. Retrieved 23 December 2020.
- Rutkowski K, Mirakian R, Till S, Rutkowski R, Wagner A (June 2021). “Adverse reactions to COVID-19 vaccines: A practical approach”. Clinical and Experimental Allergy. 51 (6): 770–777. doi:10.1111/cea.13880. PMC 8250847. PMID 33813758.
- CDC COVID-19 Response Team (January 2021). “Allergic Reactions Including Anaphylaxis After Receipt of the First Dose of Pfizer-BioNTech COVID-19 Vaccine – United States, December 14-23, 2020” (PDF). MMWR. Morbidity and Mortality Weekly Report. 70 (2): 46–51. doi:10.15585/mmwr.mm7002e1. PMC 7808711. PMID 33444297. Archived (PDF) from the original on 24 January 2021. Retrieved 2 February 2021.
- “COVID-19 vaccine safety update: Comirnaty” (PDF). European Medicines Agency (EMA). 28 January 2021. Archived (PDF) from the original on 2 June 2021. Retrieved 30 January 2021.
- Bostock N (9 December 2020). “MHRA warning after allergic reactions in NHS staff given COVID-19 vaccine”. GP. Archived from the original on 9 December 2020. Retrieved 9 December 2020.
- Booth W, Cunningham E (9 December 2020). “Britain warns against Pfizer vaccine for people with history of ‘significant’ allergic reactions”. The Washington Post. Archived from the original on 9 December 2020. Retrieved 9 December 2020.
- Cabanillas B, Akdis CA, Novak N (June 2021). “Allergic reactions to the first COVID-19 vaccine: A potential role of polyethylene glycol?”. Allergy. 76 (6): 1617–1618. doi:10.1111/all.14711. PMID 33320974. S2CID 229284320.
- “Pfizer–BioNTech COVID-19 vaccine: Health Canada recommendations for people with serious allergies”. Health Canada. 12 December 2020. Archived from the original on 22 December 2020. Retrieved 21 December 2020.
- Heller J (2 June 2021). “Israel sees probable link between Pfizer vaccine and myocarditis cases”. Reuters. Archived from the original on 25 June 2021. Retrieved 3 June 2021.
- “Clinical Considerations: Myocarditis after mRNA COVID-19 Vaccines”. Centers for Disease Control and Prevention (CDC). Archived from the original on 27 June 2021. Retrieved 27 June 2021.
This article incorporates text from this source, which is in the public domain.
- National Center for Immunization and Respiratory Diseases (23 June 2021). “Myocarditis and Pericarditis Following mRNA COVID-19 Vaccination”. CDC.gov. Centers for Disease Control and Prevention. Archived from the original on 3 July 2021. Retrieved 2 July 2021.
- Vogel AB, Kanevsky I, Che Y, Swanson KA, Muik A, Vormehr M, et al. (April 2021). “BNT162b vaccines protect rhesus macaques from SARS-CoV-2”. Nature. 592 (7853): 283–289. Bibcode:2021Natur.592..283V. doi:10.1038/s41586-021-03275-y. PMID 33524990.
- Gaebler C, Nussenzweig MC (October 2020). “All eyes on a hurdle race for a SARS-CoV-2 vaccine”. Nature. 586 (7830): 501–2. Bibcode:2020Natur.586..501G. doi:10.1038/d41586-020-02926-w. PMID 33077943. S2CID 224808629.
- World Health Organization (September 2020). “Messenger RNA encoding the full-length SARS-CoV-2 spike glycoprotein”. WHO MedNet. Archived from the original (DOC) on 5 January 2021. Retrieved 16 December 2020.
- Pallesen J, Wang N, Corbett KS, Wrapp D, Kirchdoerfer RN, Turner HL, et al. (August 2017). “Immunogenicity and structures of a rationally designed prefusion MERS-CoV spike antigen”. Proceedings of the National Academy of Sciences of the United States of America. 114 (35): E7348–E7357. doi:10.1073/pnas.1707304114. PMC 5584442. PMID 28807998.
- Orlandini von Niessen AG, Poleganov MA, Rechner C, Plaschke A, Kranz LM, Fesser S, et al. (April 2019). “Improving mRNA-Based Therapeutic Gene Delivery by Expression-Augmenting 3′ UTRs Identified by Cellular Library Screening”. Molecular Therapy. 27 (4): 824–836. doi:10.1016/j.ymthe.2018.12.011. PMC 6453560. PMID 30638957.
- de Vrieze J (21 December 2020). “Suspicions grow that nanoparticles in Pfizer’s COVID-19 vaccine trigger rare allergic reactions”. Science Magazine News. Archived from the original on 7 June 2021. Retrieved 4 June 2021.
Public Assessment Report Authorisation for Temporary Supply COVID-19 mRNA Vaccine BNT162b2 (BNT162b2 RNA) concentrate for solution for injection (PDF). Regulation 174 (Report). Medicines and Healthcare products Regulatory Agency (MHRA). 15 December 2020. Archived (PDF) from the original on 16 December 2020. Retrieved 23 April 2021. Burger L (15 March 2020). “BioNTech in China alliance with Fosun over coronavirus vaccine candidate”. Reuters. Archived