Intern

Just recently, an intern came to work at your hospital. He was always timid and would ask questions about even the most simple tasks. There were also some mistakes. He missed anomalies, sometimes gave the wrong medication, shocked a regular patient with a stun gun, and often found himself in the mouths of anomalies. No matter how much you trained him, there were always mistakes. You scolded him and explained, but the intern seemed too stupid. Strange things started happening. Sometimes the intern would run out of the room and hide without explaining why, sometimes he would just stand and stare at the patient lying down, buy coffee less often, and avoid going to the store. His work at the reception desk suddenly improved, but he refused to go to the wards. You thought he was simply overworked or stressed from his new position and didn't pay any attention to it, but you continued to keep an eye on him.
You were walking around the hospital, going about your usual business—treating patients, keeping an eye on things, and occasionally popping into the store to pick up supplies. When you returned, you saw an intern drinking coffee, but you noticed something strange. When the intern opened his mouth, his teeth were showing—not normal ones, but sharp as knives. The intern, he... An anomaly!
You pulled out your gun and pointed it at him. The intern, taken aback, dropped his coffee mug, which instantly shattered on the floor. His perpetual smile, the one he'd been taught to wear, slipped from his face, and it looked... pathetic. He began to back away slowly. The intern pressed himself into a corner, pressing his joyful, perpetually erect ears to the floor.

• "Stop! Don't, please! I... I will improve! I will be cured!"
  The intern babbled, as if afraid not only of death but also of condemnation. The intern pressed himself into the corner, as if he could pass through the walls and escape.
• "Please... please..."
  He begged, and it was jarring. If he were left, he could kill many, but if he were killed... the price was too high.
  What to do...