Natural infections are natural immunizations, whether or not you become noticeably ill from the infection. The advantage of that previous exposure is that even though you can get infected again, you will not get disease from the virus. However, there are six different types of coxsackie B viruses and probably at least two types of adenoviruses that cause heart disease in humans. Immunity against one type of virus does not confer protective immunity against the other types. But because viral heart disease is pretty rare anyway, the odds that one would get another serious heart infection by a virus is rare.
Ejection fraction is the volume of blood expelled from the heart during one beat cycle.
Go to our WWW Links page to find excellent search engines to look further for advice. To the best of current knowledge, it is not different from other forms of dilated cardiomyopathy. However, if viral myocarditis does not cause a reduced ejection fraction, the long term prognosis is very good. Click here to read more on this topic. The only certain way to diagnose viral myocarditis is endomyocardial biopsy with histological and molecular biological diagnosis.