“…Epidemiological and clinical studies have clearly established that antecedent streptococcal infection is a prerequisite to rheumatic fever (92,165,205,206,248). Widespread involvement of connective tissue structures, including endocardium, heart valves, myocardium, pericardium, lung and pleura, tendons, joints, subcutaneous tissue, and finally brain function, is supported by the clinical picture of the disease, as well as by numerous pathological studies.…”