Signatures for the between year changes in epidemic parameters within each region.
收藏数据链接：
官方服务：
资源简介：
+ve = positive change, −ve = negative change, NS = no significant change.Direction of change is from 1988 to 2002, therefore +ve relates to an increase in a parameter in 2002 relative to 1988. Prevalence is unknown for most regions.
创建时间：
2015-12-02
