David E. Barroso ⁎ 
Laboratory of Biochemical Systematics, Oswaldo Cruz Institute, FIOCRUZ, Av. Brasil 4365, 21040-900 Rio de Janeiro, RJ, Brazil
Terezinha M.P.P. Castiñeiras
Department of Preventive Medicine, Federal University School of Medicine, Rio de Janeiro, Brazil
Adriana C. Cabral, Ana C.P. Vicente
Laboratory of Molecular Genetics of Microorganisms, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
Maria C. Rebelo, Elaine O. Cerqueira
Central Laboratory Noel Nutels and Meningitis Advisory Committee, State Department of Health, Rio de Janeiro, Brazil
Mary M. Tulenko, Jane W. Marsh, Mary G. Krauland, Lee H. Harrison
Infectious Diseases Epidemiology Research Unit, University of Pittsburgh School of Medicine and Graduate School of Public Health, Pittsburgh, United States