I wasn't able to stop the infections, but...

There just happened to be a useful doctor at hand.

Hmph. So, we have the culprit...

Why'd you let her do something like this?

Gensokyo accepts everything. ...I feel like I've said that before.

But it remains true.

Gensokyo can't help but accept even plagues that end up hurting it.

That's why, if something needs to be rejected, it must be stored in memory and documented first.

With that being the case... The smallpox god being exorcised by the red shrine maiden

is quite the perfect program to clean up bugs in Gensokyo's system, don't you agree?

Uuuh...

I wish you could make your explanation easier to follow.