Myocarditis is an inflammatory disease of the heart muscle (myocardium) that can result from a variety of causes. While most cases are produced by a viral infection, an inflammation of the heart muscle may also be instigated by toxins, drugs, and hypersensitive immune reactions.nflammation of the muscular walls of the heart. inflammation of the myocardium, the muscle of the heart, usually the result of viral infection (especially Coxsackie), sometimes during or after bacterial and other infections.
1 HIV is a virus that destroys your immune system. 2  AIDS is a condition that is caused by HIV. It is considered the final stage of HIV.  Symptoms for HIV and AIDs are different for each person, because the symptoms of each condition come from opportunistic infections.
HIV mutates very readily resulting in the formation of many different strains of HIV, even within the body of a single infected person. Based on genetic similarities, the numerous virus strains may be classified into types, groups and subtypes. There are two types of HIV: HIV-1 and HIV-2: Both types are transmitted by sexual contact, through blood, and from mother to child, and they appear to cause clinically indistinguishable AIDS. HIV-1 is related to viruses found in chimpanzees and gorillas living in western Africa, while HIV-2 viruses are related to viruses found in sooty mangabeys.