Figure 1

Summary of information collected on the brucellosis outbreak in domestic pigs in Switzerland in 2009. Piggeries where microbiological investigations could be carried out (P5, P12, P13) are numbered according to Table 1. Pink text boxes: piggery characteristics. Pig numbers are given for the time period of the outbreak. Dark blue text boxes: summary of unusual events noticed in the piggeries in 2008–2009. Light blue text boxes: results of bacteriological tests for Brucella sp. performed in the context of the outbreak. Yellow arrows show animal movements among piggeries.