The Evolution of STI Testing: A Catalyst for Modern Diagnostic Technologies
GLOBAL ANNUAL NEW INFECTIONS FOR LEADING STIs
SOURCE: WHO, 2025
80 0 APPROXIMATE NEW INFECTIONS PER YEAR 60 40 20
100
120
140
160
MILLION
1.3 M
Syphilis ( T. pallidum ) Hepatitis B (HBV) HIV
1.5 M
7.1 M
Trichomoniasis ( T. vaginalis ) Chlamydia Gonorrhea ( N. gonorrhoeae ) HPV (Genital) Genital Herpes (HSV-2)
25.6 M
30 M
82 M
129 M
156 M
Figure 3. Global Annual New Infections for Leading STIs Source: World Health Organization. (2025, September 10). Sexually Transmitted Infections (STIs). Retrieved from https://www.who.int/news- room/fact-sheets/detail/sexually-transmitted-infections-(stis)
Together, these targets shape the evolving STI diagnostics landscape, occurring against a backdrop of rising global infection rates. While several STIs continue to show upward incidence trends, expanded screening
access, decentralized testing models and growing public awareness are beginning to help stabilize rates in some regions by enabling earlier detection and reducing the number of undiagnosed cases.
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