The virus was originally designed as a chemical weapon, but it seems to have leaked into the population, having just gotten into the New York City water supply. Soon it will cause unheard of choas and trouble throughout society.
The virus is spread from skin to skin contact, and its effect takes place while to subject is sleeping. It will spread quickly throughout the population, if not handled properly it will completely overtake the human race.
The virus causes the subject to loose sexual characteristics. Turning them into completely androgynous creatures. Now, with modern technology people will still be able to reproduce artificially, even without sexual characteristics.
In men the virus will remove the penis, testicles, scrotum and prostate, absorbing them into his body. This will leave him with no reproductive organs whatsoever, a doctor wouldn't be able to tell he every had any. He'll gain a female urethra between his legs so that he can still urinate. His body will also loose all Male features making him completely androgynous.
In women the virus will do similar things. The virus will cause her vagina, ovaries, outer genitals and cervix into her body, leaving her with no reproductive organs whatsoever, one couldn't even tell she ever had genitals without knowing better. She'll retain her urethra however, allowing her to urinate normally. Her breasts will disappear, and her body will become genderless, making her appearance entirely androgynous.
Even though it takes away genitals, the virus dose not effect the brain, meaning people will have the same libido they did before the virus. Though without genitals peopl will have to find creative ways to unleash their desires.