There's no specific preventative measure for myocarditis, but preventing some infections is important. Protecting yourself from influenza and similar illnesses is key. Avoiding contact with someone who has the flu is one precaution. Good hand hygiene is a primary form of prevention. Protection against sexually transmitted infections is necessary. Ensure you are up-to-date on vaccinations for illnesses such as rubella, influenza, coronavirus, mumps, hepatitis B, and hepatitis A. When using medications that may be toxic to the heart, especially chemotherapy drugs, carefully follow your doctor's instructions and be sure to have regular heart checkups.