Your blood is bad means you have syphilis You can give it to others through sexual intercourse and in other ways : You must keep up treatments for atBuy wall art of this image titled: Your blood is bad means you have syphilis You can give it to others through sexual intercourse and in other ways : You must keep up treatments for at least six months to one year following infection : Consult a reputable physician., from the WPA Posters Collection by Second Story Prints. Top quality print reproductions available now! Tags Syphilis New York (State) New York 1930 1940. Health care New York (State) New