Blue Monkey

THEY BREED. THEY HATCH. THEY KILL. Maybe it's just a phase they're going through.

A man pricks his finger while tending to an exotic plant and is rushed to the ER, where he is diagnosed with a bacterial infection before a worm-like parasite emerges from his mouth. As the infection spreads throughout the ER, the parasite is exposed to a genetic growth stimulant, which causes it grow to monstrous proportions and terrorize the hospital.