“…Some cases have been described in Brazil (Amato Neto et al 1968, França et al 1969, Queiroz 1973, others in Latin-American countries where the parasitosis is endemic (Rivero et al 1974, Monte Verde et al 1976, Pizzi et al 1982, and one case was documented in the United States (Kohl et al 1982). Usually, severe manifestations of trypanosomiasis that occurs in immunosuppressed patients result in the reactivation of chronic, previously asymptomatic or oligosymptomatic infection, although severe acute forms resulting from blood transfusions have sporadically been reported in the literature (Corona et al 1988, Wanderley et al 1988, Grant et al 1989, Nickersosn et al 1989.…”