[1] Univ Sao Paulo, Sch Med, Dept Infect & Parasit Dis, Sao Paulo, Brazil
[2] Hosp Sirio Libanes, Sao Paulo, Brazil
[3] Fundacao Oswaldo Cruz, Rio De Janeiro, Brazil
[4] Fundacao Prosangue Hemoctr Sao Paulo, Sao Paulo, Brazil
[5] Univ Sao Paulo, Sch Med, Div Clin Immunol & Allergy, Sao Paulo, Brazil