Most patients are children and all have been hospitalized for treatment and evaluation.
大多数患者为儿童，并且均已住院进行治疗和评价。
2
Currently, national surveillance comprises passive and active data collection and reporting on hospitalizedchildren aged 0-15 years.
目前，国家监测包括针对0 - 15岁住院儿童的被动和主动数据收集和报告。
3
During the 1960s and early 1970s, hundreds of American children were hospitalized each year with severe lead poisoning linked to exposure from lead in paint and gasoline.