In young adults, up to 20% of all cases of sudden death are due to myocarditis.[10]
Among patients with HIV, myocarditis is the most common cardiac pathological finding at autopsy, with a prevalence of 50% or more.[32]
One rare instance of myocarditis is viral fulminant myocarditis; fulminant myocarditis involves rapid onset cardiac inflammation and a mortality rate of 40-70%.[36] When looking at different causes of myocarditis, viral infection is the most prevalent, especially in children; however, the prevalence rate of myocarditis is often underestimated since the condition is easily overlooked.[34] Viral myocarditis being an outcome of viral infection depends heavily on genetic host factors and the pathogenicity unique to the virus.[37] One notable instance of viral myocarditis is the involvement of the SARS-CoV-2 virus; fulminant myocarditis from cardiac damage and SARS-CoV-2 has been associated with high mortality rates.