Nothing? How about a mysteriously appearing group of four people, which include two individuals that are 8-feet tall?

Some of the nurses start screaming. The patients are ushered away. 

A woman rushes the closest one with a syringe.

"We have less than two minutes to treat you. Don't panic."

The nearest one dodges. "Wait, wait. What is that supposed to do?"

"Treat the fungus that's about to make your head explode and infect everyone within range, including me." 

She tries to stab him again. 

"Wait what?"

Topher reacts to the stabbing before he reacts to the answer. A blue-ish aura emanates from him and the air gets chillier. "Explode my head?!"

"The treatment will stop the fungus from spreading, overtaking your brain, and rupturing your skull, infecting the others around you with its spores."

She injects Topher, and moves on to Izakin.

When she pokes him with a needle there is an explosion of cold. The needle and it's contents freeze and shatter, she is going to get a frostbite in that hand.

"Topher!" Says the tall woman in the group, she takes a step back, but then the cold deters her.

"How difficult are you going to make this?"

"I don't want to," Sovie answers, "wait, our wards might cover if it's a non-magical fungus."

Izakin offers his arm anyway.

She injects Izakin.

"The cold might kill the fungus, but it might not. I advise your friend leaves our facility immediately, if he can find some uninhabited woods somewhere, and then we can discuss 'magic'."

Izakin gets out of the way.

"Does that have side-effects?"

And then there is something akin to a bubble around the new arrivals. "That should filter the air well-enough" Says someone in the group that was quiet muttering to himself. "How long do we have?"

"About two minutes. Does your magic prevent infection, resist mental effects, aid in healing? If you have anything like that, use it now." 

"Yes, yes. We are already under those kinds of wards. We were exploring old ruins and we protected ourselves against nearly anything. Spontaneous teleportation being the obvious exception."

"You spontaneously teleported here? You might not have been exposed to it at all, there wouldn't be any lose spores in this hallway."

Topher calmed himself down enough to make the cold less intense. What is happening to Izakin after he got the injection?

Who's Izakin?

The patient who accepted the injection loses consciousness.

Uh... Topher goes over there, and tries to calm himself down until he is warm enough to touch Izakin. That might take awhile.

"We did. We are doing an archeological dig and apparently attacked something. Where is here? You are speaking English, there are killer fungus around and you didn't react like magic was a familiar concept. Those traits don't match anywhere I know of."

"St. Stelhart's. We treat the fungus. This one is located in the United States of America. We call the continent North America and the planet Earth."