[1] Kuwait Univ, Fac Med, Dept Microbiol, Safat 13110, Kuwait
[2] Kuwait Univ, Fac Med, Dept Pathol, Safat 13110, Kuwait
[3] Kuwait Univ, Fac Med, Dept Med, Safat 13110, Kuwait
[4] Kuwait Univ, Fac Med, Dept Radiol, Safat 13110, Kuwait
[5] Farwania Hosp, Microbiol Labs, Kuwait, Kuwait
[6] Infect Dis Hosp, Sulibikhat, Kuwait
[7] Ctr Dis Control & Prevent, Div Parasit Dis, Natl Ctr Infect Dis, Atlanta, GA 30341 USA