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. 2014 Jul 9;9(7):e101976. doi: 10.1371/journal.pone.0101976

Table 2. Spatial-temporal clusters of scrub typhus in Guangzhou city, China, 2006–2012.

Year Cluster type* Time Location No. Obs No. Exp RR P
2006 1 5/22–10/22 Conghua, Zengcheng 52 18 3.3 <0.001
2 7/3–7/30 Nansha, Panyu 19 5 4.1 <0.001
3 6/5–9/24 Huadu 23 7 3.5 <0.001
2007 1 5/22–11/19 Conghua, Zengcheng 74 18 5.1 <0.001
2 5/8–11/5 Nansha, Panyu 49 24 2.3 0.002
3 5/8–10/22 Huadu 28 9 3.2 <0.001
2008 1 5/22–11/19 Conghua, Zengcheng, 124 28 6.0 <0.001
2 5/8–11/5 Nansha, Panyu 90 35 3.0 <0.001
3 5/8–7/16 Huadu 18 6 3.2 0.036
2009 1 5/22–11/5 Conghua, Zengcheng 165 32 7.1 <0.001
2 5/22–9/10 Nansha, Panyu 82 26 3.6 <0.001
3 5/22–9/10 Huadu 32 11 3.0 <0.001
2010 1 5/22–11/19 Conghua, Zengcheng 161 36 5.8 <0.001
2 5/22–7/16 Nansha, Panyu 91 15 7.4 <0.001
5/22–11/19 Huadu 50 19 2.9 <0.001
2011 1 5/22–11/19 Conghua, Zengcheng, 234 42 8.2 <0.001
2 6/5–8/13 Nansha, Panyu 90 20 5.1 <0.001
3 7/3–8/27 Huadu 34 8 4.8 <0.001
2012 1 5/22–11/5 Conghua, Zengcheng 408 75 7.6 <0.001
2 5/8–6/18 Nansha, Panyu 105 23 4.9 <0.001
3 5/22–10/8 Huadu 123 36 3.7 <0.001
4 5/8–6/18 Haizhu 38 18 2.2 0.025

*1: Primary cluster; 2–4: Secondary cluster; No. Obs: number of observed cases; No. Exp: number of expected cases; RR: relative risk for the cluster compared with the rest of the city.