1. Laboratory for Clinical Biology, Microbiology, Imelda Hospital, Bonheiden, Belgium
2. Department of Neurology, Imelda Hospital, Bonheiden, Belgium
3. Unit of Virology, Institute of Tropical Medicine, Antwerp, Belgium
4. Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
5. Department of Clinical Sciences, National Reference Centre for Arboviruses, Institute of Tropical Medicine, Antwerp, Belgium