Acquired Immunodeficiency Syndrome--epidemiology Chancroid--epidemiology Female Forecasting Gonorrhea--epidemiology Granuloma Inguinale--epidemiology History, 15th Century History, 17th Century History, 18th Century History, 19th Century History, 20th Century Humans India--epidemiology Male Public Health Sexually Transmitted Diseases--epidemiology Syphilis--epidemiology Venereology--history