Hiccup can't help but raise a brow and then furrow the same at the noise the man makes — Something he categorizes of reminding him of Viggo (which, he's pretty sure isn't a bad thing). The frown remaining at the implication that the virus may simply be from touch — Isn't the ones that spread the fastest more airborne?

It's not a line of questioning he voices, there's still a fair amount they don't know about all of it. "Oh, you haven't met persistent," he managed amicably, with the same talkative motion of his hands, "I'm a Viking, we have stubbornness issues." He speaks too matter-of-fact for it to be a matter of pride. Perhaps, it's just a touch more resigned.

After all, he knows himself pretty well, too. It's that thought that has him fold his arms across his chest with a breath. "So far, it doesn't add up if you ask me."