Lack of seasonality in occurrence of pericarditis, myocarditis, and endocarditis

The etiology of pericarditis, myocarditis, and endocarditis is predominantly infectious, and infections often show seasonal variation. Little is known, however, about seasonal patterns in these cardiopathies. Using Danish health care registries, we identified all patients with a first-time hospital-based diagnosis of pericarditis, myocarditis, or endocarditis between 1994 and 2016. We estimated peak-to-trough ratios from fitted sine curves to...