Dahra also tried not to think about what it meant if illness could develop an immunity to Lana.

A kid named Pookie was her worst case right at the moment. She stared at the thermometer in her hand, not quite believing it—106 degrees. She had never seen a number that high.

Pookie was shaking like he was freezing. He was no longer able to answer questions sensibly. He had started talking to someone who was not exactly there, talking about how he didn’t want to go to school because he hadn’t finished his report.

And his cough was getting louder and more violent.

The flu had laughed at the Tylenol she gave Pookie. His fever had burned right through it. Whether or not he developed some kind of killing cough, he would die of fever if it rose much higher.

Plague, Chapter 14