The DOI matches its Crossref record; 10 of the 11 references it cites were found in a registry or an index.
Association Between COVID-19 and Myocarditis Using Hospital-Based Administrative Data — United States, March 2020–January 2021
Open accessAbstract
Viral infections are a common cause of myocarditis, an inflammation of the heart muscle (myocardium) that can result in hospitalization, heart failure, and sudden death (1). Emerging data suggest an association between COVID-19 and myocarditis (2-5). CDC assessed this association using a large, U.S. hospital-based administrative database of health care encounters from >900 hospitals. Myocarditis inpatient encounters were 42.3% higher in 2020 than in 2019. During March 2020-January 2021, the period that coincided with the COVID-19 pandemic, the risk for myocarditis was 0.146% among patients diagnosed with COVID-19 during an inpatient or hospital-based outpatient encounter and 0.009% among patients who were not diagnosed with COVID-19. After adjusting for patient and hospital characteristics, patients with COVID-19 during March 2020-January 2021 had, on average, 15.7 times the risk for myocarditis compared with those without COVID-19 (95% confidence interval [CI] = 14.1-17.2); by age, risk ratios ranged from approximately 7.0 for patients aged 16-39 years to >30.0 for patients aged <16 years or ≥75 years. Overall, myocarditis was uncommon among persons with and without COVID-19; however, COVID-19 was significantly associated with an increased risk for myocarditis, with risk varying by age group. These findings underscore the importance of implementing evidence-based COVID-19 prevention strategies, including vaccination, to reduce the public health impact of COVID-19 and its associated complications.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Figures


Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
The source backs part of the claim, not all of it — or backs it for a different population, condition or comparison.
In the citing paper
“with COVID ranging from 150 to 4000 cases/100 000 individuals”
From COVID-19, Myocarditis and Pericarditis (2023) · cites this paper as [85]
Experimental — accuracy not yet measuredThe source backs part of the claim, not all of it — or backs it for a different population, condition or comparison.
In the citing paper
“The overall incidence of myocarditis in the United States from SARSCoV-2 infection has been estimated in a study by the Centers for Disease Control and Prevention at around 150 cases/100 000 versus 9 cases/100 000 individuals in non-COVID cases during the same time period (Table 1).”
From COVID-19, Myocarditis and Pericarditis (2023) · cites this paper as [85]
Experimental — accuracy not yet measured
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Safety of the BNT162b2 mRNA Covid-19 Vaccine in a Nationwide Setting
Barda, N., Dagan, N., Ben-Shlomo, Y., Kepten, E., Waxman, J., Ohana, R., Hernán, M. A., Lipsitch, M., Kohane, I., Netzer, D., et al. (2021) · New England Journal of Medicine · doi:10.1056/nejmoa2110475 · Cited by 1,027
Viral myocarditis—diagnosis, treatment options, and current controversies
Pollack, A., Kontorovich, A. R., Fuster, V., & Dec, G. W. (2015) · Nature Reviews Cardiology · doi:10.1038/nrcardio.2015.108 · Cited by 657
Gargano, J. W., Wallace, M., Hadler, S. C., Langley, G., Su, J. R., Oster, M. E., Broder, K. R., Gee, J., Weintraub, E., Shimabukuro, T., et al. (2021) · MMWR. Morbidity and Mortality Weekly Report · doi:10.15585/mmwr.mm7027e2 · Cited by 587
Self-citationRisk of clinical sequelae after the acute phase of SARS-CoV-2 infection: retrospective cohort study
Daugherty, S. E., Guo, Y., Heath, K., Dasmariñas, M. C., Jubilo, K. G., Samranvedhya, J., Lipsitch, M., & Cohen, K. (2021) · BMJ · doi:10.1136/bmj.n1098 · Cited by 437
Computing Adjusted Risk Ratios and Risk Differences in Stata
Norton, E. C., Miller, M. M., & Kleinman, L. C. (2013) · The Stata Journal Promoting communications on statistics and Stata · doi:10.1177/1536867x1301300304 · Cited by 299
Kleinman, L. C., & Norton, E. C. (2008) · Health Services Research · doi:10.1111/j.1475-6773.2008.00900.x · Cited by 287
Rathore, S. S., Rojas, G. A., Sondhi, M., Pothuru, S., Pydi, R., Kancherla, N., Singh, R., Ahmed, N. K., Shah, J., Tousif, S., et al. (2021) · International Journal of Clinical Practice · doi:10.1111/ijcp.14470 · Cited by 83
Diagnosis-wide analysis of COVID-19 complications: an exposure-crossover study
Murk, W. K., Gierada, M., Fralick, M., Weckstein, A. R., Klesh, R., & Rassen, J. A. (2020) · Canadian Medical Association Journal · doi:10.1503/cmaj.201686 · Cited by 64
Most, Z. M., HENDREN, N. S., Drazner, M. H., & Perl, T. M. (2020) · Circulation · doi:10.1161/circulationaha.120.050166 · Cited by 49
Differences Between Pediatric Acute Myocarditis Related and Unrelated to SARS-CoV-2
Vukomanovic, V. A., Krasić, S., Prijić, S., Ninić, S., Minic, P. B., Petrović, G., & Nešić, D. (2021) · The Pediatric Infectious Disease Journal · doi:10.1097/inf.0000000000003094 · Cited by 28
Cited by
Sorted by citations
Items 301–309 of 309
COVID-19-Associated Cardiovascular Complications: A Narrative Literature Review
Lala, A., Vysochyn, M., & Shyshkova, K. (2026) · Cureus · doi:10.7759/cureus.105394
Waksman, O., Abusnina, W. A., Case, B. C., Cellamare, M., Zhang, C., Rappaport, H., Sawant, V., THAKKAR, Y., & Waksman, R. (2026) · Catheterization and Cardiovascular Interventions · doi:10.1002/ccd.70659
Pediatric Infectious Disease Hospitalizations in California: 1985–2021
Goodman, S. H., de Rezende, I. M., Read, J. S., & Maldonado, Y. (2026) · Pediatrics Open Science · doi:10.1542/pedsos.2025-001276
O’Brien, C., Güntürkün, F., Deng, Y., Ruaysungnoen, R., Chang, D. D., Khanijo, S., Barnett, C. F., Kapil, S., Daly, A., Goffi, A., et al. (2026) · Research Square · doi:10.21203/rs.3.rs-8682868/v1
Costa, A., Moriarty, S., Martinez, J. P., Beck, G., & Vanhecke, T. (2026) · Cureus · doi:10.7759/cureus.111954
Zheng, X., He, Y., Lin, W., & Sia, C. (2026) · Singapore Medical Journal · doi:10.4103/singaporemedj.smj-2025-163
Li, Y., Liao, W., Liang, Q., & Li, Y. (2026) · Frontiers in Cardiovascular Medicine · doi:10.3389/fcvm.2026.1881939
Neuro‐Immune Interaction: A New Therapeutic Target for Cardiovascular Diseases
Ma, X., Yang, K., Fan, A., Wang, B., Zhu, X., Hu, W., Fan, G., & Li, L. (2026) · Comprehensive physiology · doi:10.1002/cph4.70256
Kafil, T. S., Godoy, L. C., Poopak, A., Nguyen, H. T. L., & Liu, P. P. (2026) · Journal of the American College of Cardiology · doi:10.1016/j.jacc.2026.08.020
Metadata
- Authors
- Boehmer, T. K., Kompaniyets, L., Lavery, A. M., Hsu, J., Ko, J. Y., Yusuf, H., Romano, S. D., Gundlapalli, A. V., Oster, M. E., & Harris, A. M.
- Affiliations
- Centers for Disease Control and Prevention (US)
- Corresponding author
- Boehmer, Tegan K.
- ORCID
- Venue
- MMWR. Morbidity and Mortality Weekly Report
- Published
- 2021-09-03
- Volume
- 70
- Issue
- 35
- Pages
- 1228-1232
- ISSN
- 0149-2195 (ISSN-L)
- 1545-861X
- PMC
- PMC8422872
- OpenAlex
- W3197576044
- Cited by
- 310
- References
- 11
- Citations by year
- 2026: 20 · 2025: 35 · 2024: 56 · 2023: 76 · 2022: 104 · 2021: 19
- FWCI
- 42.74
- Type
- journal article
- Language
- en
- Open access
- diamond
- doi.org
- Locations
- MMWR Morbidity and Mortality Weekly Report (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion, public-domain)
- PubMed Central (publishedVersion, public-domain)
- PubMed (publishedVersion)
- Funders
- Centers for Disease Control and Prevention
- Topics
- Health Sciences › Medicine › Infectious Diseases › Viral Infections and Immunology Research
- Health Sciences › Medicine › Infectious Diseases › COVID-19 Clinical Research Studies
- Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Kawasaki Disease and Coronary Complications
- Keywords
- COVID-19 pandemic, myocarditis, SARS-CoV-2, hospitalization, COVID-19 prevention, COVID-19 vaccination
- MeSH terms
- COVID-19, Adolescent, Adult, Aged, Female, Humans, Male, Medical Records, Middle Aged, Myocarditis, Risk Factors, United States, Databases, Factual, Risk Assessment, Young Adult
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review