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From the 11/26/2021 release of VAERS data:

Found 553 cases where Age is 12-or-more-and-under-18 and Location is U.S., Territories, or Unknown and Vaccine is COVID19 and Manufacturer is PFIZER/BIONTECH and Symptom is Myocarditis or Pericarditis

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Case Details

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VAERS ID: 1395260 (history)  
Form: Version 2.0  
Age: 15.0  
Sex: Female  
Location: Washington  
Vaccinated:2021-06-09
Onset:2021-06-10
   Days after vaccination:1
Submitted: 0000-00-00
Entered: 2021-06-13
Vaccin­ation / Manu­facturer Lot / Dose Site / Route
COVID19: COVID19 (COVID19 (PFIZER-BIONTECH)) / PFIZER/BIONTECH EW0217 / 2 LA / SYR

Administered by: Private       Purchased by: ?
Symptoms: Chest discomfort, Chest pain, Dyspnoea, Myocarditis
SMQs:, Anaphylactic reaction (broad), Acute central respiratory depression (broad), Pulmonary hypertension (broad), Gastrointestinal nonspecific symptoms and therapeutic procedures (broad), Cardiomyopathy (broad), Drug reaction with eosinophilia and systemic symptoms syndrome (broad), Immune-mediated/autoimmune disorders (broad)

Life Threatening? No
Birth Defect? No
Died? No
Permanent Disability? No
Recovered? No
Office Visit? Yes
ER Visit? No
ER or Doctor Visit? No
Hospitalized? No
Previous Vaccinations:
Other Medications: No
Current Illness: No
Preexisting Conditions: None
Allergies: None
Diagnostic Lab Data:
CDC Split Type:

Write-up: Has signs of myocarditis with pain near her heart and a pressure in her chest with breathing that feels a bit labored with deep breaths, but she isn''t experiencing difficulty breathing. She complained of the symptoms on Thursday morning and then we saw on the news that night that this was a newly discovered side effect for younger patients receiving the vaccine. She has not met with the doctor yet because she didn''t want to miss final tests at school and the offices were closed for the weekend. However, we have been monitoring her closely and had hoped it would disappear by now, but we will be seeking treatment tomorrow since it has not gotten worse, but it also hasn''t improved after 4 days of rest.


VAERS ID: 1395672 (history)  
Form: Version 2.0  
Age: 14.0  
Sex: Male  
Location: Michigan  
Vaccinated:2021-06-04
Onset:2021-06-06
   Days after vaccination:2
Submitted: 0000-00-00
Entered: 2021-06-14
Vaccin­ation / Manu­facturer Lot / Dose Site / Route
COVID19: COVID19 (COVID19 (PFIZER-BIONTECH)) / PFIZER/BIONTECH - / 2 - / -

Administered by: Unknown       Purchased by: ?
Symptoms: Chest discomfort, Chest pain, Echocardiogram, Echocardiogram normal, Electrocardiogram ST segment abnormal, Electrocardiogram abnormal, Limb discomfort, Myocarditis, Pain in extremity, Troponin increased
SMQs:, Anaphylactic reaction (broad), Myocardial infarction (narrow), Arrhythmia related investigations, signs and symptoms (broad), Gastrointestinal nonspecific symptoms and therapeutic procedures (broad), Cardiomyopathy (broad), Tendinopathies and ligament disorders (broad), Drug reaction with eosinophilia and systemic symptoms syndrome (broad), Immune-mediated/autoimmune disorders (broad)

Life Threatening? No
Birth Defect? No
Died? No
Permanent Disability? No
Recovered? No
Office Visit? No
ER Visit? No
ER or Doctor Visit? No
Hospitalized? Yes, 1 days
   Extended hospital stay? No
Previous Vaccinations:
Other Medications: None
Current Illness: None
Preexisting Conditions: Obesity, autism spectrum disorder
Allergies: No known allergies
Diagnostic Lab Data: See above
CDC Split Type:

Write-up: This patient received their second Pfizer COVID-19 vaccine on 6/4/2021. The patient began experiencing arm pain which migrated to his chest on 6/6/2021. The pain resolved but returned with increased severity on 6/7/2021, prompting medical evaluation. The pain was described as a pressure sensation in the center of the chest and in bilateral arms. Upon initial evaluation, he was found to have an abnormal EKG with ST segment changes. Troponin was significantly elevated. He was transferred to the hospital. A transthoracic echo was obtained and was normal. He was hospitalized on the pediatric cardiology service, admitted on 6/8/2021. Troponin trended down during his stay. He was started on lisinopril. He was discharged home on 6/9/2021 with plan for outpatient pediatric cardiology follow up. Given the proximity of his second Pfizer COVID-19 vaccine to onset of his symptoms, and given similar reported events, the chief concern is whether his episode of myocarditis is related to administration of the Pfizer COVID-19 vaccine. I was on call as attending physician when this patient was admitted. Physician cared for this patient as the pediatric cardiology inpatient attending during his hospital course.


VAERS ID: 1395815 (history)  
Form: Version 2.0  
Age: 17.0  
Sex: Male  
Location: Texas  
Vaccinated:2021-06-11
Onset:2021-06-11
   Days after vaccination:0
Submitted: 0000-00-00
Entered: 2021-06-14
Vaccin­ation / Manu­facturer Lot / Dose Site / Route
COVID19: COVID19 (COVID19 (PFIZER-BIONTECH)) / PFIZER/BIONTECH EW0170 / 1 - / IM
COVID19: COVID19 (COVID19 (PFIZER-BIONTECH)) / PFIZER/BIONTECH EW0167 / 2 - / IM

Administered by: Unknown       Purchased by: ?
Symptoms: Brain natriuretic peptide normal, Chest pain, Electrocardiogram ST segment elevation, Electrocardiogram abnormal, Headache, Myocarditis, SARS-CoV-2 test negative, Troponin
SMQs:, Myocardial infarction (broad), Arrhythmia related investigations, signs and symptoms (broad), Gastrointestinal nonspecific symptoms and therapeutic procedures (broad), Cardiomyopathy (broad), Drug reaction with eosinophilia and systemic symptoms syndrome (broad), Immune-mediated/autoimmune disorders (broad), COVID-19 (broad)

Life Threatening? No
Birth Defect? No
Died? No
Permanent Disability? No
Recovered? No
Office Visit? No
ER Visit? No
ER or Doctor Visit? Yes
Hospitalized? Yes, ? days
   Extended hospital stay? No
Previous Vaccinations:
Other Medications: Omeprazole 20 mg QD
Current Illness:
Preexisting Conditions: VACTERL Syndrome, Hashimoto''s thyroiditis, Celiac disease
Allergies: Metoclopramide (anaphylaxis) Strawberry flavor (Anaphylaxis)
Diagnostic Lab Data: ECG shows demonstrates diffuse ST Elevations. Troponin. COVID test was negative. Serial Troponin levels: 6/12@0003 = 26.3, 6/12@0346 = 21, 6/12@0924 = 11.3, 6/12@1545 = 8.01, 6/13@0400 = 14.7, 6/13@100 = 20.90, 6/13@1545=17.10, 6/13@2200 = 12.80, 6/14@0400 = 14.7. Serial BNP levels 6/12@0346 = 27, 6/13@0400 58, 6/14 @ 0400 = 46
CDC Split Type:

Write-up: Pfizer-BioNTech COVID-19 Vaccine EUA: Myocarditis Per COVID-19 Vaccination Card patient received Pfizer vaccine dose #1 on 5/19/21, and Pfizer dose #2 on 6/9/21. Patient presented to Hospital on 6/11/2021 and was transferred. On the evening of 6/9 patient began to experience mild chest pain with headache. On 6/10 the pain increased to an intesity of 8/10, and on 6/11 the pain became unbearable. Pain is described as sharp, squeezing, and constant.


VAERS ID: 1395818 (history)  
Form: Version 2.0  
Age: 13.0  
Sex: Male  
Location: Maine  
Vaccinated:2021-06-09
Onset:2021-06-12
   Days after vaccination:3
Submitted: 0000-00-00
Entered: 2021-06-14
Vaccin­ation / Manu­facturer Lot / Dose Site / Route
COVID19: COVID19 (COVID19 (PFIZER-BIONTECH)) / PFIZER/BIONTECH - / 2 UN / IM

Administered by: Private       Purchased by: ?
Symptoms: Chest pain, Echocardiogram abnormal, Ejection fraction decreased, Electrocardiogram ST segment elevation, Electrocardiogram ST-T change, Electrocardiogram abnormal, Immunoglobulin therapy, Laboratory test, Myocarditis, Troponin increased
SMQs:, Cardiac failure (narrow), Myocardial infarction (narrow), Arrhythmia related investigations, signs and symptoms (broad), Gastrointestinal nonspecific symptoms and therapeutic procedures (broad), Cardiomyopathy (narrow), Drug reaction with eosinophilia and systemic symptoms syndrome (broad), Immune-mediated/autoimmune disorders (broad)

Life Threatening? Yes
Birth Defect? No
Died? No
Permanent Disability? No
Recovered? No
Office Visit? No
ER Visit? No
ER or Doctor Visit? Yes
Hospitalized? Yes, 3 days
   Extended hospital stay? No
Previous Vaccinations:
Other Medications: None
Current Illness: 2-3 weeks prior to vaccination, 7-10 days of dry cough
Preexisting Conditions: None
Allergies: None
Diagnostic Lab Data: 6/12/21- Troponin 1258, Echo EF- 52%, Trop 707, ECG mild ST changes 6/13-Trop800, 988, 1126, 1024, 977, ST changes improving 6/14- 1079
CDC Split Type:

Write-up: Myocarditis, Chest pain, ST elevation and mildly depressed EF on echo. Troponin peaked, has leveled at 1000 3 days after presentation, drawing infection labs and administering IVIG.


VAERS ID: 1395988 (history)  
Form: Version 2.0  
Age: 17.0  
Sex: Male  
Location: Washington  
Vaccinated:2021-06-01
Onset:2021-06-03
   Days after vaccination:2
Submitted: 0000-00-00
Entered: 2021-06-14
Vaccin­ation / Manu­facturer Lot / Dose Site / Route
COVID19: COVID19 (COVID19 (PFIZER-BIONTECH)) / PFIZER/BIONTECH - / 2 LA / SYR

Administered by: Pharmacy       Purchased by: ?
Symptoms: Chest discomfort, Chest pain, Discomfort, Headache, Hypersomnia, Myocarditis
SMQs:, Anaphylactic reaction (broad), Noninfectious encephalitis (broad), Noninfectious encephalopathy/delirium (broad), Noninfectious meningitis (broad), Gastrointestinal nonspecific symptoms and therapeutic procedures (broad), Cardiomyopathy (broad), Depression (excl suicide and self injury) (broad), Drug reaction with eosinophilia and systemic symptoms syndrome (broad), Immune-mediated/autoimmune disorders (broad)

Life Threatening? No
Birth Defect? No
Died? No
Permanent Disability? No
Recovered? No
Office Visit? No
ER Visit? No
ER or Doctor Visit? No
Hospitalized? No
Previous Vaccinations:
Other Medications: N/A
Current Illness: N/A
Preexisting Conditions: N/A
Allergies: Peanuts
Diagnostic Lab Data:
CDC Split Type:

Write-up: He had the second shot, had very mild headache, and then woke up approx 48 hours after 2nd dose, complaining that his " chest hurt", I asked him to explain the " hurt", he said his chest felt tight, heavy pressure, like weight on his chest, uncomfortable. He said it went away after a few days... I didn''t realize the inflammation of the heart was a side affect, until I recently heard that was coming up, so I put 2 and 2 together, and thought I had better report.


VAERS ID: 1396060 (history)  
Form: Version 2.0  
Age: 15.0  
Sex: Male  
Location: Illinois  
Vaccinated:2021-06-10
Onset:2021-06-12
   Days after vaccination:2
Submitted: 0000-00-00
Entered: 2021-06-14
Vaccin­ation / Manu­facturer Lot / Dose Site / Route
COVID19: COVID19 (COVID19 (PFIZER-BIONTECH)) / PFIZER/BIONTECH - / 2 - / IM

Administered by: Private       Purchased by: ?
Symptoms: Brain natriuretic peptide normal, Chest pain, Echocardiogram abnormal, Electrocardiogram ST segment elevation, Electrocardiogram abnormal, Laboratory test, Pericarditis, Troponin increased
SMQs:, Systemic lupus erythematosus (broad), Myocardial infarction (narrow), Arrhythmia related investigations, signs and symptoms (broad), Gastrointestinal nonspecific symptoms and therapeutic procedures (broad), Cardiomyopathy (broad), Chronic kidney disease (broad), Drug reaction with eosinophilia and systemic symptoms syndrome (broad), Immune-mediated/autoimmune disorders (broad)

Life Threatening? Yes
Birth Defect? No
Died? No
Permanent Disability? No
Recovered? Yes
Office Visit? No
ER Visit? No
ER or Doctor Visit? No
Hospitalized? Yes, 2 days
   Extended hospital stay? No
Previous Vaccinations:
Other Medications: aripiprazole, hydroxyzine, melatonin, methylphenidate
Current Illness: none
Preexisting Conditions: ADHD, ODD, mild developmental delay
Allergies: none
Diagnostic Lab Data: Echocardiogram: normal function but shows inflammation consistent with acute pericarditis EKG: diffuse ST elevation Troponins: Uptrended to $g4000 (Normal < 35ng/L) and downtrended at discharge to 3000 BNP: normal range
CDC Split Type:

Write-up: 2 days following 2nd vaccine woke up with chest pain and was diagnosed with acute pericarditis. He was admitted for 2 days and monitored with imaging and labs. Ultimately heart showed good function and he was discharged home with ibuprofen for 10 days and cardiology follow up


VAERS ID: 1396094 (history)  
Form: Version 2.0  
Age: 17.0  
Sex: Male  
Location: Michigan  
Vaccinated:2021-04-13
Onset:2021-04-20
   Days after vaccination:7
Submitted: 0000-00-00
Entered: 2021-06-14
Vaccin­ation / Manu­facturer Lot / Dose Site / Route
COVID19: COVID19 (COVID19 (PFIZER-BIONTECH)) / PFIZER/BIONTECH - / 1 RA / IM

Administered by: Public       Purchased by: ?
Symptoms: Blood pressure increased, Chest X-ray, Chest pain, Dyspnoea, Echocardiogram abnormal, Electrocardiogram abnormal, Fibrin D dimer normal, Laboratory test normal, Malaise, Myocarditis, Pericarditis, Pyrexia, SARS-CoV-2 test negative, Troponin
SMQs:, Anaphylactic reaction (broad), Neuroleptic malignant syndrome (broad), Systemic lupus erythematosus (broad), Anticholinergic syndrome (broad), Arrhythmia related investigations, signs and symptoms (broad), Acute central respiratory depression (broad), Pulmonary hypertension (broad), Gastrointestinal nonspecific symptoms and therapeutic procedures (broad), Hypertension (narrow), Cardiomyopathy (broad), Chronic kidney disease (broad), Drug reaction with eosinophilia and systemic symptoms syndrome (broad), Immune-mediated/autoimmune disorders (broad), COVID-19 (broad)

Life Threatening? No
Birth Defect? No
Died? No
Permanent Disability? No
Recovered? Yes
Office Visit? Yes
ER Visit? No
ER or Doctor Visit? Yes
Hospitalized? No
Previous Vaccinations:
Other Medications: Multivitamin 3 days per week
Current Illness: None
Preexisting Conditions: None
Allergies: Allergy: Amoxicillin (rash, hives)
Diagnostic Lab Data: See above.
CDC Split Type:

Write-up: Approximately 6-7 days after the first dose of COVID vaccine (Pfizer) patient had low grade fever (100.8) malaise, and not feeling well. Progressed to chest pain and slight SOB. Continued low grade fever controlled with Tylenol and Motrin. Was seen in urgent care and tested for COVID. COVID PCR negative. EKG done (abnormal). Suggested covid 19 pneumonia and follow up with PCP. Was seen in ER that evening for increasing chest pain, SOB. Chest xray done. EKG not done. No labs sent. COVID PCR done. Negative. Improved at home with rest, Tylenol, Motrin. Sunday afternoon, was taken to ER for chest pain, increased SOB, and not feeling well. BP elevated, CXR done, EKG done, and bloodwork done. Troponin negative, D Dimer negative, labs WNL. No acute MI. Suggested pericarditis based on EKG results. Follow up suggested with cardiologist. Echo and EKG done on Tuesday May 4. Improving pericarditis/myocarditis. Final EKG done on Friday 5/7.


VAERS ID: 1396550 (history)  
Form: Version 2.0  
Age: 16.0  
Sex: Male  
Location: Washington  
Vaccinated:2021-06-10
Onset:2021-06-13
   Days after vaccination:3
Submitted: 0000-00-00
Entered: 2021-06-14
Vaccin­ation / Manu­facturer Lot / Dose Site / Route
COVID19: COVID19 (COVID19 (PFIZER-BIONTECH)) / PFIZER/BIONTECH - / 2 AR / IM

Administered by: Private       Purchased by: ?
Symptoms: Bundle branch block right, Chest pain, Echocardiogram normal, Electrocardiogram ST segment elevation, Electrocardiogram repolarisation abnormality, Myocarditis, Troponin increased
SMQs:, Torsade de pointes/QT prolongation (broad), Myocardial infarction (narrow), Arrhythmia related investigations, signs and symptoms (narrow), Conduction defects (narrow), Gastrointestinal nonspecific symptoms and therapeutic procedures (broad), Cardiomyopathy (broad), Drug reaction with eosinophilia and systemic symptoms syndrome (broad), Immune-mediated/autoimmune disorders (broad)

Life Threatening? No
Birth Defect? No
Died? No
Permanent Disability? No
Recovered? No
Office Visit? No
ER Visit? No
ER or Doctor Visit? No
Hospitalized? Yes, 2 days
   Extended hospital stay? No
Previous Vaccinations:
Other Medications: none
Current Illness: none
Preexisting Conditions: none
Allergies: none
Diagnostic Lab Data: Troponin 9, 27, 24, 26 Echo reassuring with good function and no effusion ECG, initially RBBB repeat ECG with early repolarization ECG SINUS RHYTHM INCOMPLETE RIGHT BUNDLE BRANCH BLOCK [90+ ms QRS DURATION, TERMINAL R IN V1/V2, 40+ ms S IN I/aVL/V4/V5/V6] EARLY REPOLARIZATION [ST ELEVATION WITH NORMALLY INFLECTED T-WAVE]
CDC Split Type:

Write-up: Acute Myocarditis with chest pain and elevated troponin (peak level 27) occurring 3 days after 2nd Pfizer covid shot. Treatment with Ketorolac and morphine, clinically improving at the time of report. Echo reassuring with good function and no effusion, ECG initially with RBBB repeat ECG with early depolarization, no arrhythmias


VAERS ID: 1396604 (history)  
Form: Version 2.0  
Age: 12.0  
Sex: Male  
Location: Pennsylvania  
Vaccinated:2021-06-10
Onset:2021-06-13
   Days after vaccination:3
Submitted: 0000-00-00
Entered: 2021-06-14
Vaccin­ation / Manu­facturer Lot / Dose Site / Route
COVID19: COVID19 (COVID19 (PFIZER-BIONTECH)) / PFIZER/BIONTECH - / UNK - / -

Administered by: Private       Purchased by: ?
Symptoms: C-reactive protein increased, Chest X-ray normal, Chest pain, Electrocardiogram normal, Myocarditis, Troponin increased
SMQs:, Myocardial infarction (narrow), Gastrointestinal nonspecific symptoms and therapeutic procedures (broad), Cardiomyopathy (broad), Drug reaction with eosinophilia and systemic symptoms syndrome (broad), Immune-mediated/autoimmune disorders (broad)

Life Threatening? No
Birth Defect? No
Died? No
Permanent Disability? No
Recovered? Yes
Office Visit? No
ER Visit? No
ER or Doctor Visit? No
Hospitalized? Yes, ? days
   Extended hospital stay? No
Previous Vaccinations:
Other Medications:
Current Illness:
Preexisting Conditions:
Allergies: cephalosporins
Diagnostic Lab Data: 6/14/21- normal EKG and CXR. Troponin elevated to 3.81, CRP 10
CDC Split Type:

Write-up: chest pain, labs suggestive of myocarditis


VAERS ID: 1397025 (history)  
Form: Version 2.0  
Age: 15.0  
Sex: Male  
Location: Washington  
Vaccinated:2021-06-10
Onset:2021-06-12
   Days after vaccination:2
Submitted: 0000-00-00
Entered: 2021-06-14
Vaccin­ation / Manu­facturer Lot / Dose Site / Route
COVID19: COVID19 (COVID19 (PFIZER-BIONTECH)) / PFIZER/BIONTECH - / 2 - / IM

Administered by: Private       Purchased by: ?
Symptoms: Chest pain, Myocarditis, Troponin I increased, Troponin increased
SMQs:, Myocardial infarction (narrow), Gastrointestinal nonspecific symptoms and therapeutic procedures (broad), Cardiomyopathy (broad), Drug reaction with eosinophilia and systemic symptoms syndrome (broad), Immune-mediated/autoimmune disorders (broad)

Life Threatening? No
Birth Defect? No
Died? No
Permanent Disability? No
Recovered? No
Office Visit? No
ER Visit? No
ER or Doctor Visit? No
Hospitalized? Yes, ? days
   Extended hospital stay? No
Previous Vaccinations:
Other Medications: None
Current Illness: None
Preexisting Conditions: None
Allergies: None
Diagnostic Lab Data: Troponin I High Sensitivity 6/13 (AM): 9127 (Normal < 53) Troponin I 6/13 (PM): 3.92 (Normal < 0.8) Troponin I 6/14 (AM): 3.65 Troponin I 6/14 (PM): 2.72
CDC Split Type:

Write-up: Patient developed chest pain with elevated troponin levels 2 days after receipt of dose #2 of the Pfizer SARS-CoV2 vaccine. He was admitted to the hospital with the diagnosis of myocarditis.


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