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. 2009 Jun 4;9:82. doi: 10.1186/1471-2334-9-82

Table 2.

Age and occupational distributions and activities (1–3 weeks prior to symptom appearance) of confirmed cases

Cases (%) (Male: Female, %)
Age (Years)
0–10 46 (9.6) (76:24)
11–20 33 (6.9) (79:21)
21–30 78 (16.3) (51:49)
31–40 99 (20.6) (46:54)
41–50 101 (21.0) (56:44)
51–60 47 (9.8) (55:45)
61–70 55 (11.5) (53:47)
≥ 71 21 (4.4) (52:48)
Occupation
Children at preschool age 20 (4.2) (75:25)
Pupils 50 (10.4) (78:22)
Farmers 408 (85.0) (52:48)
Others 2 (0.4) (50:50)
Activities
Farm work 325 (67.7) (53:47)
Play on grassland 65 (13.5) (75:25)
Recreation 20 (4.2) (65:35)
Housework 25 (5.2) (8:92)
Unknown 45 (9.4) (71:29)