The overall case fatality rate is 4% but has reached up to 20-30% in remote areas.

总病死率为4%，但在一些边远地区可高达20%到30%。

youdao

In complex emergencies that cause massive population displacement, the case fatality rate for measles can be as high as 30%.

在造成大规模人群流离失所的复杂紧急情况中，麻疹的病死率可高达30%。

youdao

With proper treatment, the case fatality rate should remain below 1%.

经过适当治疗，病死率应保持在1％以下。

youdao

The reported death toll gives the Middle East-based disease a case fatality rate of about 60%, similar to that of the feared H5N1 avian flu.

WSJ: Virus's Toll in Saudi Arabia Raises Fears of Faster Spread