This has been circulating: articles about and links to a supposedly new infectious disease with bizarre symptoms that include variously colored fibers emerging from the skin, sometimes in colors including red, black, white, green, and blue.
Having studied the "proof" on offer at the Morgellons Research Foundation site here I would like to pre-emptively offer my opinion: this will turn out to be a hoax. The "fibers" are most likely carpet fibers. The "patients" are delusional people who have self-inflicted skin injuries.
I'm willing to be proven wrong, but that's my take on it for now!