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A detailed review was made of data pertinent to the occurrence of chronic Chagas disease in the United States.
In Latin America, 16 to 18 million individuals are thought to have Chagas' disease and 90 million are considered to be at risk of infection. In the United States, the occurrence of Chagas' disease is virtually limited to individuals who have resided in Latin America where they acquired the infection, and then migrated to this country.
Data on the prevalence of positive serologic reactions for Trypanosoma cruzi (a protozoan causing Chagas cardiomyopathy) serve for calculating that a total of up to 74,000 Latin Americans residing in the United States have the chronic form of chagasic cardiomyopathy. The vast majority of these individuals are either undiagnosed, or misdiagnosed as having idiopathic dilated cardiomyopathy or coronary artery disease. Vector transmission of T. cruzi infection is very unlikely to occur in the United States because of variations in biological behavior of local species of insect vectors and because of changes in human living conditions. Transfusion of blood from infected but asymptomatic individuals is considered the most important mechanism of transmission of this disorder in the United States.
Observational Model: Natural History
National Heart, Lung, and Blood Institute (NHLBI)
Published on BioPortfolio: 2014-07-23T21:56:35-0400
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Occlusion of the outflow tract in either the LEFT VENTRICLE or the RIGHT VENTRICLE of the heart. This may result from CONGENITAL HEART DEFECTS, predisposing heart diseases, complications of surgery, or HEART NEOPLASMS.
Pathological conditions involving the HEART including its structural and functional abnormalities.
A voluntary organization concerned with the prevention and treatment of heart and vascular diseases.
Inflammation of the ENDOCARDIUM caused by BACTERIA that entered the bloodstream. The strains of bacteria vary with predisposing factors, such as CONGENITAL HEART DEFECTS; HEART VALVE DISEASES; HEART VALVE PROSTHESIS IMPLANTATION; or intravenous drug use.
Pathological conditions involving any of the various HEART VALVES and the associated structures (PAPILLARY MUSCLES and CHORDAE TENDINEAE).
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Biological therapy involves the use of living organisms, substances derived from living organisms, or laboratory-produced versions of such substances to treat disease. Some biological therapies for cancer use vaccines or bacteria to stimulate the body&rs...