Doctors who treat a person with gonorrhea must report this to the local board of health and include the disease’s “probable origin”.

Chapter 299 The Public Health Section 2. Local boards of health – diseased persons – physicians to report. It shall be the duty of every licensed physician, of every superintendent or manager of a hospital dispensary and of every person who gives treatment for a venereal disease, to mail to the local board of health…

Unmarried couples may not commit “lewd acts” and live together in the same residence.

798.02 Lewd and lascivious behavior. If any man and woman, not being married to each other, lewdly and lasciviously associate and cohabit together, or if any man or woman, married or unmarried, engages in open and gross lewdness and lascivious behavior, they shall be guilty of a misdemeanor of the second degree, punishable as provided…