{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T01:36:13Z","timestamp":1787016973982,"version":"build-2736575974"},"reference-count":12,"publisher":"BMJ","issue":"11","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2022,11,17]]},"published-print":{"date-parts":[[2022,11]]},"abstract":"<jats:p>The SARS-COV-2 pandemic led to the development of several vaccinations to contain the disease. The Pfizer-BioNTech COVID-19 (BNT162b2) vaccine was recommended on May 2021 for use in children above 12 years and older. The vaccine is safe, well tolerated and highly effective. Initial reports showed no serious adverse events; however, cases of myocarditis in young healthy male adolescents have been reported. We report two cases of myocarditis\/perimyocarditis who presented with short history of chest pain following administration of the second dose of the MRN COVID-19 vaccine.<\/jats:p>","DOI":"10.1136\/bcr-2022-253383","type":"journal-article","created":{"date-parts":[[2022,11,28]],"date-time":"2022-11-28T10:05:36Z","timestamp":1669629936000},"page":"e253383","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":4,"title":["Post-COVID mRNA vaccine myocarditis in children: report of two cases"],"prefix":"10.1136","volume":"15","author":[{"given":"Ahmed","family":"Shamekh","sequence":"first","affiliation":[{"name":"Paediatric Emergency, Sidra Medicine, Doha, Ad Dawhah, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Colin","family":"Powell","sequence":"additional","affiliation":[{"name":"Paediatrics, Cardiff and Vale University Health Board, Cardiff, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Abdusamea","family":"Ashabani","sequence":"additional","affiliation":[{"name":"Paediatric Emergency, Sidra Medicine, Doha, Ad Dawhah, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8676-0953","authenticated-orcid":false,"given":"Ibtihal Siddiq","family":"Abdelgadir","sequence":"additional","affiliation":[{"name":"Paediatric Emergency, Sidra Medical and Research Center, Doha, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2022,11,28]]},"reference":[{"key":"2025082622463009000_15.11.e253383.1","doi-asserted-by":"crossref","first-page":"n3090","DOI":"10.1136\/bmj.n3090","article-title":"Myocarditis after vaccination against covid-19","volume":"16","author":"Gellad","year":"2021","journal-title":"BMJ"},{"key":"2025082622463009000_15.11.e253383.2","doi-asserted-by":"publisher","DOI":"10.1001\/jama.2021.24110"},{"key":"2025082622463009000_15.11.e253383.3","doi-asserted-by":"crossref","first-page":"241","DOI":"10.1080\/14779072.2022.2066522","article-title":"Myocarditis following COVID-19 vaccination: incidence, mechanisms, and clinical considerations","volume":"20","author":"Power","year":"2022","journal-title":"Expert Rev Cardiovasc Ther"},{"key":"2025082622463009000_15.11.e253383.4","unstructured":"US Food and Drug Administration . Coronavirus (COVID-19) update: FDA authorizes Pfizer-BioNTech COVID-19 vaccine for emergency use in adolescents in another important action in fight against pandemic. FDA news release, 2021. Available: https:\/\/www.fda.gov\/news-events\/press- [Accessed 22 Jun 2022]."},{"key":"2025082622463009000_15.11.e253383.5","doi-asserted-by":"publisher","DOI":"10.1056\/NEJMoa2034577"},{"key":"2025082622463009000_15.11.e253383.6","doi-asserted-by":"publisher","DOI":"10.15585\/mmwr.mm7020e1"},{"key":"2025082622463009000_15.11.e253383.7","doi-asserted-by":"publisher","DOI":"10.15585\/mmwr.mm7027e2"},{"key":"2025082622463009000_15.11.e253383.8","doi-asserted-by":"publisher","DOI":"10.1542\/peds.2021-052478"},{"key":"2025082622463009000_15.11.e253383.9","doi-asserted-by":"publisher","DOI":"10.1161\/CIRCULATIONAHA.121.055913"},{"key":"2025082622463009000_15.11.e253383.10","doi-asserted-by":"crossref","first-page":"1078","DOI":"10.1056\/NEJMoa2110475","article-title":"Safety of the BNT162b2 mRNA Covid-19 vaccine in a nationwide setting","volume":"385","author":"Barda","year":"2021","journal-title":"N Engl J Med Overseas Ed"},{"key":"2025082622463009000_15.11.e253383.11","doi-asserted-by":"crossref","first-page":"1228","DOI":"10.15585\/mmwr.mm7035e5","article-title":"Association Between COVID-19 and Myocarditis Using Hospital-Based Administrative Data - United States, March 2020-January 2021","volume":"70","author":"Boehmer","year":"2021","journal-title":"MMWR Morb Mortal Wkly Rep"},{"key":"2025082622463009000_15.11.e253383.12","doi-asserted-by":"publisher","DOI":"10.1161\/CIRCULATIONAHA.121.056135"}],"container-title":["BMJ Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bcr-2022-253383","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,8,27]],"date-time":"2025-08-27T05:46:39Z","timestamp":1756273599000},"score":1,"resource":{"primary":{"URL":"https:\/\/casereports.bmj.com\/lookup\/doi\/10.1136\/bcr-2022-253383"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,11]]},"references-count":12,"journal-issue":{"issue":"11","published-online":{"date-parts":[[2022,11,28]]},"published-print":{"date-parts":[[2022,11]]}},"alternative-id":["10.1136\/bcr-2022-253383"],"URL":"https:\/\/doi.org\/10.1136\/bcr-2022-253383","relation":{},"ISSN":["1757-790X"],"issn-type":[{"value":"1757-790X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,11]]}}}