In most outbreaks, hospital staff share case information through paper, Excel -- if at all.

在大多数暴发中，医院工作人员通过纸张、Excel 共享病例信息——如果有的话。

The word " safeguard" (safeguard) refers to something that is supposed to protect you or protect, in this case, information.

“保障”（safeguard）这个词指的是应该保护你或保护信息的东西。