Patient zero glitched out?

I’m playing the Patient Zero campaign on Hitman 2 via the Legacy pack…whats happened is, a doctor I knocked out and stashed in a locker later became infected. I cannot access his body to kill him so its saying I have 1 INFECTED left. But as soon as I killed the last man Diana said well done etc head for an exit, but it isn’t showing an exit?? Can anyone help?? Thanks in advance

Did you try blowing up a propane tank or explosive next to the locker? That might kill him.

I ran round the whole level and there was none. You would think there would be at least ONE in either the kitchen or the maintenance department. I’ve got all the XP for the 100 people I’ve killed and hid their bodies so it looks like I may have to just exit to menu…….