Mafia 106. Plague. Dragon Utopia

Regarding the chances and mana.
Sand Angel in Mafia.

Why? Nowhere does it say that the murderer will lose if the Mafia are alive. All those without immunity to disease need to be dead. Everyone in the Mafia has immunity.

Added 6 minutes later
If I understand Rimp correctly, if the sharpshooter has a rat in his pocket and goes to kill, the victim will remain alive but infected (if the victim is a civilian without immunity)? Although the sharpshooter could also have done a check, I almost forgot about that (I just think the Inquisitor is a brave player).

Added 58 seconds later
And yes, the Inquisitor, logically, cannot be sick, because otherwise he would already be dead.

Added 48 minutes later

Even in the case of poisoning, which is unclear where it is in the newspaper, the poisoned sharpshooter loses his ultimate ability and check, remaining with only the ability to kill.

How can he lose his ultimate ability if he used it on the first day of the game?