Study: Rates of myocarditis and pericarditis no greater for those who had covid19

[Amity Island]

Graph attached shows in 2020 comparing those who had and didn't have covid, shows no significant difference in rates of myocarditis and pericarditis.

The Incidence of Myocarditis and Pericarditis in Post COVID-19 Unvaccinated Patients-A Large Population-Based Study - PubMed

Myocarditis and pericarditis are potential post-acute cardiac sequelae of COVID-19 infection, arising from adaptive immune responses. We aimed to study the incidence of post-acute COVID-19 myocarditis and pericarditis. Retrospective cohort study of 196,992 adults after COVID-19 infection in...

pubmed.ncbi.nlm.nih.gov

 

[AndBreathe]

Graph attached shows in 2020 comparing those who had and didn't have covid, shows no significant difference in rates of myocarditis and pericarditis.

The Incidence of Myocarditis and Pericarditis in Post COVID-19 Unvaccinated Patients-A Large Population-Based Study - PubMed

Myocarditis and pericarditis are potential post-acute cardiac sequelae of COVID-19 infection, arising from adaptive immune responses. We aimed to study the incidence of post-acute COVID-19 myocarditis and pericarditis. Retrospective cohort study of 196,992 adults after COVID-19 infection in...

pubmed.ncbi.nlm.nih.gov

Were there any sub-cohorts identified, in terms of vaccinated v unvaccinated?

 

[Amity Island]

Were there any sub-cohorts identified, in terms of vaccinated v unvaccinated?

The study is from March 2020 to Jan 2021.

 

[Bruce Stephens]

Were there any sub-cohorts identified, in terms of vaccinated v unvaccinated?

It was early, so nobody was vaccinated. What @Amity Island didn't mention is that they were specifically looking at people who'd recovered from COVID-19:

It has recently been reported that the incidence of myocarditis and pericarditis is increased in COVID-19 patients during the acute illness [12]. However; whether or not myocarditis and pericarditis after the recovery period are a part of the long COVID-19 syndrome is yet unknown. Herein, we studied the incidence of myocarditis and pericarditis in a large cohort of COVID-19 patients after recovering from the acute infection.​

Still interesting and reassuring for those who survive the acute phase and recover.

Here's Dr Susan Oliver's account of the first time Dr John Campbell covered it:

She mentions (and talks about in the video) a meta analysis of studies showing that COVID-19 does increase the risk of these (a lot), and that vaccination also does (but much less):

Myocarditis in SARS-CoV-2 infection vs. COVID-19 vaccination: A systematic review and meta-analysis

BackgroundThis study aimed to compare the incidence of myocarditis in COVID-19 vaccines and in severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) infection groups.MethodsElectronic databases (MEDLINE, Scopus, Cochrane Central Register of Controlled Trials, Cochrane Database of...

www.frontiersin.org

 

[Amity Island]

@Bruce Stephens

Would you be able to respond to the actual study (rather than Mr Campbell)? What does it conclude? What does the graph show? Is it a reliable study?

 

[Bruce Stephens]

@Bruce Stephens

Would you be able to respond to the actual study (rather than Mr Campbell)? What does it conclude? What does the graph show? Is it a reliable study?

No. I would comment that it's only one study (though a big one). It does show that while recovering there wasn't an increase in myocarditis or pericarditis compared to a matched group of patients.

Which is interesting because I thought various kinds of heart damage was one of the known sequelae of infection; perhaps that's not the case, or perhaps one needs to look months later than the acute phase. I don't know.

 

[Amity Island]

No. I would comment that it's only one study (though a big one). It does show that while recovering there wasn't an increase in myocarditis or pericarditis compared to a matched group of patients.

Which is interesting because I thought various kinds of heart damage was one of the known sequelae of infection; perhaps that's not the case, or perhaps one needs to look months later than the acute phase. I don't know.

Thanks. That's a far better response than your first one with that youtube video, that didn't help at all and was irrelevant to the actual study I posted and its conclusions.