Alien- Necro Late Stages

He was bringing up the rear as the group passed one of the last office doors in Administration. As he went by, the door slid open and a person stumbled out. Or rather, a pustule-covered apparition that had once been a person. The victim, whoever it was, was in the advanced stage of cellular necrosis—skin beginning to soften and sag, soon to slide off bone—and it was impossible to tell what gender they were.
The apparition moaned as it lunged toward Nicholas. Maybe the person was attempting to speak, or maybe the sound was nothing more than an expression of pain and despair. Either way, the vocalization caught his attention and he spun, ready to fire.
But he hesitated.
The victim was too close to Nicholas for the others to risk firing, and as they watched the disease-ravaged apparition coughed loudly, spewing chunks of wet black matter onto Nicholas’s face. Then when the figure reached Nicholas it collapsed on him, its skeleton sliding out of its liquefied flesh, much of which smeared across his chest, abdomen, and legs. The skeleton hit the ground, its bones blackened from contagion.
Nicholas staggered quickly backward to put some distance between him and the skeleton, but it was too late. He was infected.
“I couldn’t do it,” he said. “I couldn’t pull the trigger.”
He let out a small cough then, and his skin began to break out in lesions and pustules.

Prototype, Chapter 21