How to cure the disease NPC? (Sekiro: Shadows Die Twice)

In reviews said. The more you die, the more they get worse. At one point they did themselves
start to die :)

KeKLoL15000
One day when you will come to the temple, the doctor will sit next to the old man, she will give a quest to bring a blood sample, and after running will need to come again and you will tell and Duluth medicine.

How to find out who is infected? After death it was written that caught Carver and someone else, can't remember exactly. At Carver, she took the blood, now we need the second PS, and XS who he is and where to find it

KeKLoL15000
In the inventory look for each infected has its own subject.

ayyrasmus
just looking for an answer, thank you!

My question is, after the NPC were infected I cured by taking the blood of the old woman which 1 locations gave the bell. So, after I cured the disease she died, and next to him and her son are dead, too... So, they die anyway, or have the opportunity to save?

ZM_SlayeR
Likely to die anyway. I they're dead, too, though not sick.