@apmalong Anybody answering zero at this point would need to shut down. Perhaps that's an okay answer since what you may be getting at is that there is no way to operate such a facility safely in a rampant plague world.
@apmalong 此时任何回答为零的人都需要关闭。也许这是一个不错的答案，因为您可能会得到的是，在瘟疫猖獗的世界中，没有办法安全地操作这样的设施。