SARS-CoV-2 vaccines in children and adolescents: Can immunization prevent hospitalization?

Item request has been placed! ×
Item request cannot be made. ×
loading   Processing Request
  • Additional Information
    • Source:
      Publisher: Wolters Kluwer Health Country of Publication: Netherlands NLM ID: 101174817 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1728-7731 (Electronic) Linking ISSN: 17264901 NLM ISO Abbreviation: J Chin Med Assoc Subsets: MEDLINE
    • Publication Information:
      Publication: 2019- : [Alphen aan den Rijn, The Netherlands] : Wolters Kluwer Health
      Original Publication: Taipei, Taiwan : Chinese Medical Association, c2003-
    • Subject Terms:
    • Abstract:
      The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and its variants of concern can infect people of all ages and can cause severe diseases in children, such as encephalitis, which require intensive care. Therefore, vaccines are urgently required to prevent severe disease in all age groups. We reviewed the safety and efficacy profiles of mRNA vaccines-BNT162b2 and mRNA-1273-demonstrated by clinical trials or observed in the real world. mRNA-1273 is effective in preventing SARS-CoV-2 infection in preschool children (6 months-6 years old). Both BNT162b2 and mRNA-1273 are effective in preventing SARS-CoV-2 infection in school-aged children and adolescents, thereby preventing post-coronavirus disease (COVID) conditions. The common side effects of vaccination are pain at the injection site, fatigue, and headache. Myocarditis and pericarditis are uncommon. Monitoring post-vaccination troponin levels may help prevent severe cardiac events. The SARS-CoV-2 coronavirus mutates its genome to overcome the herd immunity provided by mass vaccinations; therefore, we may need to develop new generations of vaccines, such as those using viral nucleocapsid proteins as antigens. In conclusion, the mRNA vaccines are generally safe and effective in preventing severe diseases and hospitalization among children and adolescents.
      Competing Interests: Conflicts of interest: Dr Shih-Hwa Chiou, an editorial board member at Journal of the Chinese Medical Association , had no role in the peer review process of or decision to publish this article. The other authors declare that they have no conflicts of interest related to the subject matter or materials discussed in this article.
      (Copyright © 2022, the Chinese Medical Association.)
    • Comments:
      Comment in: J Chin Med Assoc. 2023 Mar 1;86(3):345. (PMID: 36194165)
    • References:
      Zhang R, Li Y, Zhang AL, Wang Y, Molina MJ. Identifying airborne transmission as the dominant route for the spread of COVID-19. Proc Natl Acad Sci U S A. 2020;117:14857–63.
      Giuntella O, Hyde K, Saccardo S, Sadoff S. Lifestyle and mental health disruptions during COVID-19. Proc Natl Acad Sci U S A. 2021;118:e2016632118.
      Shang Y, Li H, Zhang R. Effects of pandemic outbreak on economies: evidence from business history context. Front Public Health. 2021;9:632043.
      Polack FP, Thomas SJ, Kitchin N, Absalon J, Gurtman A, Lockhart S, et al.; C4591001 Clinical Trial Group. Safety and efficacy of the BNT162b2 mRNA Covid-19 vaccine. N Engl J Med. 2020;383:2603–15.
      Voysey M, Clemens SAC, Madhi SA, Weckx LY, Folegatti PM, Aley PK, et al.; Oxford COVID Vaccine Trial Group. Safety and efficacy of the ChAdOx1 nCoV-19 vaccine (AZD1222) against SARS-CoV-2: an interim analysis of four randomised controlled trials in Brazil, South Africa, and the UK. Lancet. 2021;397:99–111.
      Sadoff J, Le Gars M, Shukarev G, Heerwegh D, Truyers C, de Groot AM, et al. Interim results of a phase 1-2a trial of Ad26.COV2.S COVID-19 vaccine. N Engl J Med. 2021;384:1824–35.
      Haas EJ, Angulo FJ, McLaughlin JM, Anis E, Singer SR, Khan F, et al. Impact and effectiveness of mRNA BNT162b2 vaccine against SARS-CoV-2 infections and COVID-19 cases, hospitalisations, and deaths following a nationwide vaccination campaign in Israel: an observational study using national surveillance data. Lancet. 2021;397:1819–29.
      Whittaker E, Bamford A, Kenny J, Kaforou M, Jones CE, Shah P, et al.; PIMS-TS Study Group and EUCLIDS and PERFORM Consortia. Clinical characteristics of 58 children with a pediatric inflammatory multisystem syndrome temporally associated with SARS-CoV-2. JAMA. 2020;324:259–69.
      Price AM, Olson SM, Patel MM. BNT162b2 protection against the omicron variant in children and adolescents. Reply. N Engl J Med. 2022;386:2346.
      Moderna, Inc. A study to evaluate efficacy, safety, and immunogenicity of mRNA-1273 vaccine in adults aged 18 years and older to prevent COVID-19. Available at https://clinicaltrials.gov/ct2/show/NCT04470427COVE . Accessed May 9, 2022.
      Corchado-Garcia J, Zemmour D, Hughes T, Bandi H, Cristea-Platon T, Lenehan P, et al. Analysis of the effectiveness of the Ad26.COV2.S adenoviral vector vaccine for preventing COVID-19. JAMA Netw Open. 2021;4:e2132540.
      Moderna, Inc. A study to evaluate safety and effectiveness of mRNA-1273 COVID-19 vaccine in healthy children between 6 months of age and less than 12 years of age. Available at https://clinicaltrials.gov/ct2/show/NCT04796896KidCOVE . Accessed May 9, 2022.
      Choi PY. Thrombotic thrombocytopenia after ChAdOx1 nCoV-19 vaccination. N Engl J Med. 2021;385:e11.
      Moderna, Inc. A study to evaluate the safety, reactogenicity, and effectiveness of mRNA-1273 vaccine in adolescents 12 to <18 years old to prevent COVID-19. Available at https://clinicaltrials.gov/ct2/show/NCT04649151TeenCOVE . Accessed May 9, 2022.
      Mallapaty S. Where did omicron come from? Three key theories. Nature. 2022;602:26–8.
      Walter EB, Talaat KR, Sabharwal C, Gurtman A, Lockhart S, Paulsen GC, et al.; C4591007 Clinical Trial Group. Evaluation of the BNT162b2 Covid-19 vaccine in children 5 to 11 years of age. N Engl J Med. 2022;386:35–46.
      Frenck RW Jr, Klein NP, Kitchin N, Gurtman A, Absalon J, Lockhart S, et al.; C4591001 Clinical Trial Group. Safety, immunogenicity, and efficacy of the BNT162b2 Covid-19 vaccine in adolescents. N Engl J Med. 2021;385:239–50.
      Moderna, Inc. Moderna Announces its COVID-19 vaccine phase 2/3 study in children 6 months to under 6 years has successfully met its primary endpoint. 2022 (News link: https://www.accesswire.com/694300/Moderna-Announces-its-COVID-19-Vaccine-Phase-23-Study-in-Children-6-Months-to-Under-6-Years-Has-Successfully-Met-Its-Primary-Endpoint ). Accessed May 24, 2022.
      Creech CB, Anderson E, Berthaud V, Yildirim I, Atz AM, Melendez Baez I, et al.; KidCOVE Study Group. Evaluation of mRNA-1273 COVID-19 vaccine in children 6 to 11 years of age. N Engl J Med. 2022;386:2011–23.
      Ali K, Berman G, Zhou H, Deng W, Faughnan V, Coronado-Voges M, et al. Evaluation of mRNA-1273 SARS-CoV-2 vaccine in adolescents. N Engl J Med. 2021;385:2241–51.
      Girard B, Tomassini JE, Deng W, Maglinao M, Zhou H, Figueroa A, et al. mRNA-1273 vaccine-elicited neutralization of SARS-CoV-2 Omicron in adolescents and children. medRxiv. 2022:2022.01.24.22269666. doi: https://doi.org/10.1101/2022.01.24.22269666 . (PMID: 10.1101/2022.01.24.22269666)
      Shi DS, Whitaker M, Marks KJ, Anglin O, Milucky J, Patel K, et al.; COVID-NET Surveillance Team. Hospitalizations of children aged 5-11 years with laboratory-confirmed COVID-19 - COVID-NET, 14 states, March 2020-February 2022. MMWR Morb Mortal Wkly Rep. 2022;71:574–81.
      Oster ME, Shay DK, Su JR, Gee J, Creech CB, Broder KR, et al. Myocarditis cases reported after mRNA-based COVID-19 vaccination in the US from December 2020 to August 2021. JAMA. 2022;327:331–40.
      Mintzker Y. BNT162b2 COVID-19 vaccine in children 5 to 11 years of age. N Engl J Med. 2022;386:604–6.
      Marks KJ, Whitaker M, Agathis NT, Anglin O, Milucky J, Patel K, et al.; COVID-NET Surveillance Team. Hospitalization of infants and children aged 0-4 years with laboratory-confirmed COVID-19 - COVID-NET, 14 states, March 2020-February 2022. MMWR Morb Mortal Wkly Rep. 2022;71:429–36.
      Stafstrom CE. Neurological effects of COVID-19 in infants and children. Dev Med Child Neurol. 2022;64:818–29.
      Sameer A, Malcolm B, Janette L, Douglas M, Angela A, Samjhauta B. COVID-19 mRNA vaccine induced troponinemia - is the vaccine a cardiac stressor? Int J Clin Card. 2021;8:232.
      Soriano JB, Murthy S, Marshall JC, Relan P, Diaz JV; WHO Clinical Case Definition Working Group on Post-COVID-19 Condition. A clinical case definition of post-COVID-19 condition by a Delphi consensus. Lancet Infect Dis. 2022;22:e102–7.
      Davis HE, Assaf GS, McCorkell L, Wei H, Low RJ, Re’em Y, et al. Characterizing long COVID in an international cohort: 7 months of symptoms and their impact. Eclinicalmedicine. 2021;38:101019.
      Dangi T, Class J, Palacio N, Richner JM, Penaloza MacMaster P. Combining spike- and nucleocapsid-based vaccines improves distal control of SARS-CoV-2. Cell Rep. 2021;36:109664.
    • Accession Number:
      0 (COVID-19 Vaccines)
      0 (Nucleocapsid Proteins)
      0 (Troponin)
      0 (Viral Vaccines)
      N38TVC63NU (BNT162 Vaccine)
    • Publication Date:
      Date Created: 20220711 Date Completed: 20220928 Latest Revision: 20230727
    • Publication Date:
      20231215
    • Accession Number:
      10.1097/JCMA.0000000000000774
    • Accession Number:
      35816282