Mafia 88. Corruption

Aren't both killings based on the same principle? And don't they spread the same disease?

The same. It's just that the description of Arandor's death is such that he had time, but he didn't use it (a reference to yesterday's infection), while in Sesam's case, according to the description, he didn't have much time at all. So, in his case, the infection leads to immediate death.