[He rights himself and heads for the open door.] I think I know.

[He pushes the door open wider and glances around. More tables. More empty husks. Seen like this there is a desperation to the set up. The hospital was trying to keep ahead of the husks and failed at some point.]

We already know this didn’t end well. But, what caused it would be nice to know.

[Infected. There is too much to unpack about that.] What caused their first wave of infections?