The light turned red.
I remember that more clearly than the alarm: red light on white walls, and my mother's face behind the glass. For several seconds I stood with one hand flat against the door and did nothing at all. She was still looking at me, and there was no panic in her face. That was the first thing that made me angry.
"Open the door."
She shook her head.
"Open it."
"Daniel." She pressed the intercom, and her voice came through the speaker thin and calm. "Stay where you are."
"You're exposed."
"I know."
"We can treat it."
"We probably can."
"Then open the door."
"No."
I hit the control panel. Nothing happened. The system had already locked the inner chamber, so I hit it again, and then again.
"You'll expose yourself."
"I don't care."
"I do." There was a small smile on her face, nearly the one she had worn when I was six and had tried to fix the kitchen tap with a spoon. "You've always been bad at listening."
"I learned it from you."
"No," she said. "You taught yourself." She laid her palm on the glass, and I put mine against the other side. It was cold. "Go and work."
"I'm not leaving you."
"You don't have a choice."
"I do. I can fix this."
She did not answer. Her eyes moved away from mine, and that was when I understood she was afraid. Not of dying. Of what I would do afterward.
I turned to the emergency phone, and my hands were already moving. I called the hospital, the emergency response team, Lena, everyone I knew. When I came back to the glass she was sitting down. I had never seen her sit so quickly.
"Mom?"
"I'm all right."
"You don't look all right."
"I've looked worse. Your graduation."
A laugh broke out of me before I could stop it. "That was a good suit."
"It had a shine."
"It was expensive."
"It looked expensive."
The alarm kept sounding. Neither of us said what we both knew.
The response team arrived within the hour, led by the hospital's biosafety officer, a precise, tired woman named Dr. Brandt. She read the logs, looked at my mother through the window, and told me what the protocol said: the chamber stays sealed until the cycle completes, and no one goes in. "Whatever is in there is contained," she said. "If we open it, it isn't."
"She'll die."
"Dr. Floria, I understand—"
"You don't. I wrote that protocol. It was written for rooms with nobody in them."
She held her ground for a long time. I was the principal investigator, and the laboratory was mine, and in the end I told her I would take responsibility in writing. She put the form in front of me. I signed it with a steady hand, and I have thought about that steadiness more than I have thought about almost anything.
When the cycle finished, the door opened, and a team in white suits carried my mother out and down to the isolation suite one floor below. I stood back and let them. Nobody had told me to put on a suit, and I had not thought of it.
The first six hours were strangely ordinary. That is the part nobody tells you about disaster. The world does not become, all at once, the thing you will later remember. Someone still asked where a form had gone. Someone still complained that the coffee machine was broken, and a nurse still hunted for her pen, and a doctor still glanced at the clock. My mother, through the glass of the isolation suite, still asked whether I had eaten.
"I've eaten."
"When?"
"Earlier."
"What?"
I looked at her. She had her judging smile on. "Coffee," I said.
"That's not food."
"It's something."
"Patient."
"Doctor."
She smiled again, and then she coughed, and I stopped smiling. She noticed. "Don't."
"Don't what?"
"Look at me like that. Like you're already saying goodbye."
"I'm not."
"Good. Then stop." She leaned back against the pillow. "Get back to work."
"I am working."
"You're standing here."
"Thinking."
"With your eyes open?"
"Advanced thinking."
She smiled, and for a moment we were in the kitchen again. Then she closed her eyes, and the monitor beside her bed went on with its quiet rhythm. I had spent my life reading numbers. That night I could not make myself look at them.