1 Clinical Microbiology, Department of Medical Sciences, Uppsala University, Uppsala, Sweden.
2 Department of Sociology, Faculty of Arts, University of Ljubljana, Ljubljana, Slovenia.
3 IHR, Alert and Response to Epidemics, Water-Borne Diseases Unit (IHR), Department of Communicable Diseases and Health Analysis (CHA), Pan-American Health Organization/World Health Organization (PAHO/WHO), Lima, Peru.