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其实还有看用于什么目的。
WHO的定义甚至认为14天内,2例或2例以上具有关联的病例,就是聚集性了(cluster)。
Definition of cluster
A cluster is defined as two or more persons presenting with manifestations of unexplained,
acute respiratory illness with fever >38°C or who died of an unexplained respiratory illness and
that are detected with onset of illness within a period of 14 days and in the same geographical
area and/or are epidemiologically linked.
原文见: |
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