Holy Light Sickness, Holy Light Cure

"Right, establish a quarantine zone first!" Jaina looked utterly confused. "But back then, both Arthas and Uther overlooked that step. They couldn't have been that foolish, could they?"

Deren asked Jaina curiously, "How to deal with a plague—didn't Dalaran have systematic countermeasures?"

"I... haven't studied that yet. But Dalaran's archives must have something." Jaina lowered her head.

"So sending you to investigate the plague was originally just meant to determine the details first, then formulate the appropriate response." Deren guessed, then wore a strange expression. "Haven't you noticed how strange the Stratholme plague was?"

Jaina's eyes widened as she looked at Deren. "What's strange about it? At the time, Master Antonidas guessed it was a magical plague."

Deren shook his head. "Ordinary plagues spread through water sources, soil, mosquitoes, contaminated food, and such. But the Stratholme plague spread through bread made from contaminated grain, and people only became infected after eating it. Isn't that strange?"

Jaina: ...

Seeing that she had no reaction, Deren continued. "That was an extremely inefficient method of transmission. It could not even be called a plague. It should have been called poisoning."

"Ah!" Only then did Jaina realize it. "So the plague incident itself was exaggerated propaganda, meant to lure Arthas into investigating?"

Deren nodded. "The grain needed by a city had to be enormous. During transport, it was divided among wagon after wagon, meaning there would be countless drivers and guards along the way. So the Cult of the Damned would have had very little chance to contaminate it during transport. That left only the harvest and storage stages, where they could send people to contaminate it. But strangely, after the Stratholme incident, no one ever heard of this kind of plague spread through contaminated grain anywhere in Azeroth again. It was as if