that is one valid possibility/reason. also women who have another STD especially HPV they're at higher risks of receiving HPV both anallly and vaginally because it creates microscopic lesions.

nonetheless, HIV can be transmitted vaginally by fluid exchange of mucus membranes. When it comes to a virus, it's so powerful that the amount of opportunities is numerous.

one of the main reasons why contractin HIV via anal sex is its a direct entry to the entire body, that's easy access to blood, mucus membranes, possible lesion in tissues, weak immune system an wide combination.

It's scary