Characteristics of study population in the cross-sectional survey, January 2010.

NOTE. # 87 participants were missing occupation data, and 79 unvaccinated participants were missing occupation data.§Children in family care is defined as the persons aged ≤15 years that are not student or Children in Kindergarten, or did not worked in any organizations or units.*12 participants reported unknown vaccination history of pH1N1.

备注：87名参与者缺失职业数据，另有79名未接种疫苗的参与者缺失职业数据。家庭照料儿童（Children in family care）定义为年龄≤15岁、既非在校学生或幼儿园在园儿童，且未在任何机构或单位就职的人员。另有12名参与者的甲型H1N1（pH1N1）疫苗接种史未知。