There is limited understanding that the disease spreads from person to person through body fluids. (newscientist.com)
It can also be spread from person to person during anal, oral, or vaginal sex, or while sharing sex toys. (plannedparenthood.org)
Contact with such bodily fluids is the way the disease spreads from person to person, with symptoms of infection taking two to 21 days to manifest themselves. (scientificamerican.com)