[1] SEDENA, Escuela Mil Grad Sanidad, Immunol Lab, Mexico City 11200, Mexico
[2] Natl Polytech Inst, Natl Sch Biol Sci, Lab Med Bacteriol, Mexico City 11350, Mexico
[3] Hosp Especial Dr Antonio Fraga Mouret, Mexican Social Secur Inst, Natl Med Ctr Raza, Unidad Med Alta Especial, Mexico City 02990, Mexico
[4] Univ Autonoma, Dept Biol Syst, Lab Biotechnol, Metropolitana Campus Xochimilco,Metropolitana Camp, Calzada Hueso 1100, Mexico City 04960, Mexico
[5] SEDENA, Escuela Mil Grad San, Res Dept, Mexico City 11200, Mexico
[6] Univ Autonoma Metropolitana, Dept Biol Syst, Lab Biotechnol, Campus Xochimilco,Calzada Hueso 1100,Col Villa Qui, Mexico City 04960, Mexico
[7] Univ Autonoma Metropolitana, Dept Biol Syst, Lab Microbial Ecol, Campus Xochimilco,Calzada Hueso 1100, Mexico City 04960, Mexico
[8] Hosp Gen Dr Gaudencio Gonzalez Garza, Natl Med Ctr Raza, Mexican Social Secur Inst, Unidad Med Alta Especial,Microbiol Lab, Mexico City 02990, Mexico