Chagas disease

Chagas' disease disease of South and Central America caused by the parasite Trypanosoma cruzi. It usually affects children and young adults and is transmitted by the feces of infected insects, typically the assassin bug . Most of those infected have mild symptoms, such as fever and swelling and redness around the eyes, but from 10% to 30% develop chronic disease that may result in serious or fatal inflammation of the brain and heart tissues. There is no vaccine and no satisfactory treatment. The incidence of Chagas' disease in the United States has increased since the 1970s, possibly because of increased immigration from Mexico and Central America, where the incidence is very high. In immunosuppressed patients (see AIDS ) Chagas' disease can form a mass in the cranial cavity that mimics a tumor, presumably because the lymphocytes that guard against the parasite are the same that are depleted by the AIDS virus. See also trypanosome .

Chagas's disease A disease that can affect humans and other animals. It occurs chiefly in Central and South America. The causal agent is a protozoon, Trypanosoma cruzi. The pathogen is transmitted by blood-sucking bugs. Symptoms may include anaemia and various signs of heart, gland, and nervous-system involvement. The disease is named after the Brazilian physician Carlos Chagas (1879–1934).

Chagas's disease A disease that can affect humans and other animals. It occurs chiefly in Central and S. America. The causal agent is a protozoon, Trypanosoma cruzi. The pathogen is transmitted by blood-sucking bugs. Symptoms may include anaemia and various signs of heart, gland, and nervous-system involvement. The disease is named after the Brazilian physician Carlos Chagas. Charles Darwin may have been infected with this disease in S. America, and some have suggested that his continual ill-health in later years was due to it.