1. Department of Clinical Microbiology, Kalmar County Hospital
2. Department of Animal Ecology, Lund University, Lund
3. FOI, The Swedish Defence Research Agency
4. Department of Biology and Environmental Science, University of Kalmar, Kalmar
5. Department of Infectious Diseases, Umeå University, Umeå
6. Department of Medical Sciences, Section for Infectious Diseases, Uppsala University Hospital, Uppsala, Sweden