The following graphs summarize six decades of venereal diseases data for the United States. As described in a recent ProMED report, the incidence of syphilis has been rising since 1999. 1,2 Note that reports of chlamydial infection have increased arithmetically since the disease became reportable in 1994.
(Graph tool tutorial at
1. Berger SA. Infectious Diseases of the United States, 2011. 1030 pages, 464 graphs, 8237 references. Gideon e-books, https://www.gideononline.com/ebooks/country/infectious-diseases-of-the-united-states/
2. Berger SA. Syphilis: Global Status, 2011. 231 pages, 336 graphs, 861 references. Gideon e-books, https://www.gideononline.com/ebooks/disease/syphilis-global-status/
Featured on ProMED