<unk>  is not a common disease now because syphilis is usually treated early. In 2012, the incidence of syphilis was estimated to be 6 million cases worldwide. From year 2005 to 2014, the incidence of syphilis in the United States increased from 2.9 to 6.3 cases/100,000/year. The rate of reported cases increased by 15.1% between 2013 and 2014 in the United States. In 2012, the prevalence of syphilis was estimated to be approximately 18 million cases in men and women aged 15-29 worldwide. Among infected patients with Treponema pallidum only 3 to 5% develop<unk>  and 5% of those individuals develop tabes dorsalis, 10–20 years later.
Neurosyphilis Epidemiology and Demographics
Syphilis epidemiology and demographics
Typhus epidemiology and demographics
HIV AIDS epidemiology and demographics
Malaria epidemiology and demographics
Cytomegalovirus epidemiology and demographics
AIDS epidemiology & demographics
Coronavirus epidemiology and demographics