This might in some sense be another long shot for our encyclopedia. Culshaw is definitely Canadian, but she works at and is affiliated with the University of Texas at Tyler. I guess that is enough to count. Especially since the world really needs to be informed of this truly dangerous, misguided and ignorant nutjob.
Rebecca Culshaw is an HIV-denialist who knows math but very little epidemiology or the necessary biology. That does not prevent her from, without qualms, claiming that it is OK for HIV-positive mothers to breastfeed their children, refuse HIV tests or special care for their children and so on. This is not just innocent kookery.
Culshaw is the author of “Science Sold Out: Does HIV Really Cause AIDS?” wherein she uses mathematics to show that HIV was never an epidemic and that therefore it doesn't exist. Or something along those lines.
Here’s a useful guide to HIV denialism. For a good scare, you might try the comment section here.
Diagnosis: Seriously deluded (confirmation bias, double standards and arguments from ignorance abound) and extremely dangerous, to the extent that she should possibly be held accountable for several deaths already.