Although there have been less than 40 known cases of this among humans in history (data from 1933 to 2003), and most of these were among professional animal keepers, unless treated properly the disease can be fatal in up to 80 % of cases.
雖然該病毒從 1933 年被發現到 2003 年為止，全世界人類感染總案例不到 40 例，且絕大多數為動物照養人員，但是人類一旦感染，如果沒有採取適當的抗病毒藥物治療的話，死亡率仍可能高達 80 %。