The purpose of this registry is to study the natural history of vaccination-related myocarditis and pericarditis and to assess possible risk factors for these conditions.
Primary Objective:
\- To document the natural history of confirmed, probable, suspected, and subclinical myocarditis and pericarditis (myopericarditis) following ACAM2000® vaccination.
Other Pre-defined Objective:
\- To look for potential predictive factors for the prognosis of myopericarditis following ACAM2000® vaccination.
Who can participate
Age range
17 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Individuals who are current or former members of the active duty, Reserve, or National Guard, from any branch of service
* Documented vaccination with ACAM2000® vaccine
* Meet one of the case definitions for suspect, probable, confirmed or subclinical myopericarditis.
Exclusion Criteria:
* Individuals not meeting at least one of the case definitions for myopericarditis will not be entered into the Registry.
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
The number of confirmed, probable, suspected, and subclinical cases of myopericarditis, categorized by time since vaccination
Timeframe: 2 years after enrollment or after the last symptoms or positive findings