Contingency table for HA re-infections with common HA clades.
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资源简介：
Rows represent the HA clade in the first detected infection and columns the HA clade from an infection retrieved ≥7 days later (i.e. long lag). The number in each cell represents the number of cases, the standardized Pearson's residuals are provided in brackets.
创建时间：
2013-06-20
