A male or female nymphomanic so twisted they make a game of contracting venereal diseases to pass on to others, be they male female or lower order primate. The point being the competition to infect the largest number possible in the shortest amount of time.
How to practice at being a Homocunthropus Infectus.
Esleasabeth: I just got a whole junior basketball team to my gift of scabes.
Ejockulator: That's nothing I got the whole football team with hiv and Sars.
Eseazabeth: OMG you win the great Good Googly Moogly!
The characteristic of being infected easily through biological genes.
My dog Ganja is infectuous because of her ancestory of poor breeding, which has lead to her skin problems, but on the other hand she is a great dog.