Her hard expression softens, and she nods. "This is a retrovirus," she says after a few moments. She glances at me. "Like VITAS 3, yes, I’ll admit that. But there are other retroviruses too. Some are nasty—HMHVV causes vampirism, for example—one causes a kind of meningitis, but then there’s the retrovirus that causes recurrent dandruff in trolls, and one that seems to convey a severe allergy to peanuts. Popular media to the contrary, ‘retrovirus’ doesn’t necessarily mean ‘global pandemic,’ okay?"