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Objective: To investigate the prevalence of viral myocarditis worldwide. Methods: We conducted a systematic search for the prevalence of the most common viruses in myocarditis and 75 studies were included for statistical analysis of the prevalence of adenovirus, hepatitis C virus, cytomegalovirus, Ebola virus, human herpesvirus 6, influenza virus, parvovirus, and non-polio enteroviruses. Results: The highest prevalence was related to B19 (25.0%) and non-polio enteroviruses (18%). The prevalence of human herpesvirus 6, cytomegalovirus, and Ebola virus was12.8%, 5.5%, and 3.1%, respectively. Hepatitis C virus accounted for 6.1% of the disease, the adenoviruses contributed to 5.2% of viral myocarditis. The lowest incidence was related to the influenza virus with 2.0%. Conclusions: Treatment of myocarditis is still problematic and may depend on the etiologic diagnosis. So it is important to know the commonly occurring viral factors in myocarditis and timely diagnosis and treatment are also imperative.