[1] Inst Nacl Salud Publ, Ctr Invest Salud Poblac, Cuernavaca, Morelos, Mexico
[2] Consejo Nacl Ciencia & Tecnol Conacyt, Mexico City, DF, Mexico
[3] Inst Nacl Pediat, Serv Infectol, Mexico City, DF, Mexico
[4] Inst Nacl Pediat, Serv Dermatol, Mexico City, DF, Mexico
[5] Harvard TH Chan Sch Publ Hlth, Dept Global Hlth & Populat, Boston, MA USA