Salmonella sero-incidence estimates in eight European countries. Incidence of salmonella infections modeled on the basis of antibody concentrations against Salmonella-LPS, measured by in-house mixed ELISA in 6,393 serum samples collected between 2000 and 2008. Box: 25th and 75th percentile. Whiskers: 2.5th and 97.5th percentile. DK = Denmark, FI = Finland, FR = France, IT = Italy, NL = The Netherlands, PL = Poland, RO = Romania, SE = Sweden.