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. 2015 May 22;144(1):35–44. doi: 10.1017/S0950268815000990

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© Cambridge University Press 2015

This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 3. — Clusters of S. suis cases detected in humans in three SaTScan running sets. (a) Set 1: only human cases and controls were used as input of the Bernoulli model. (b) Set 2: human cases and controls with porcine reproductive and respiratory syndrome (PRRS) locations as centroid of the moving space-time window. (c) Set 3: human cases and controls with eight groups of covariates by sex, occupation and history of eating high-risk pig dishes. Red dots represent human cases (90 cases); black square represent controls (183 controls); pig symbols represent locations confirmed with PRRS virus; purple circles represent the possible clusters constructed from SaTScan software. Cluster 1 is the most likely cluster, cluster 2 is the secondary cluster. For each cluster, P value, time-frame of the cluster detected, log likelihood ratio (LLR) and relative risk [RR; except panel (c)] are provided.