[1] Univ Florence, Osped Careggi, Dipartimento Area Crit Med Chirurg, Clin Malattie Infett, I-50134 Florence, Italy
[2] Hosp Apoyo Yurimaguas, Yurimaguas Loreto, Peru
[3] Univ Siena, Dipartimento Biol Mol, Sez Microbiol, I-53100 Siena, Italy
[4] Karolinska Inst, Div Int Hlth IHCAR, Dept Publ Hlth Sci, S-17176 Stockholm, Sweden
[5] Univ Peruana Cayetano Heredia, Inst Med Trop Alexander von Humboldt, Lima 100, Peru