Now At least one shower a day, clean underwear and outer clothes, no B.O. Exercise in fresh air is necessary. Periodic checkups by dentists and physicians are the best prevention. Hospitals are clean, most surgery is safe. Then God gives life and death. Herbs and remedies are available but no certain cure.
Men remain abstinent until married to a virgin.
Women guard your virginity. If you have the means, don't marry. With anesthesia and asepsis slow and often with successful recovery. For business or vacation, pack and drive or fly. Then Land travel over unpaved roads in drafty, bumpy, crowded wagons or coaches.