[Polynikes]

“Did they touch the pen used to sign the document?”

They probably supplied the pen and put it back in in their pocket.

[corkoman]

Exactly - a perfectly natural thing to do. LEOs are big on documentation and they use pens frequently. And they are often gracious in the sharing of their pens with others.

I would imagine the experts will say that there is only a very low probability that active virus was gathered by these early responders.

[bgill]

And handed the pen to their kid to do homework with that evening. Junior would probably chew on it while he munched on Cheetos and licked the cheese powder off his fingers and today his teacher is grading a paper with strange orange smears. No, probably not infectious but it just takes one slip up to send it into the wild.