San Francisco Monthly STI Report

Data for September 2026. Report prepared: October 22, 2026.

Note: All statistics are provisional until the annual report is released for the year. Morbidity is based on date of diagnosis. Totals for past months may change due to delays in reporting from labs and providers.

Table 1. STIs among San Francisco residents, September 2026.Female syphilis cases include patients assigned as female at birth.
Year
2026
2025
Disease month YTD month YTD
Gonorrhea 390 3397 353 3382
Male Rectal Gonorrhea 145 1304 147 1242
Chlamydia 286 2516 301 2678
Male Rectal Chlamydia 44 384 40 395
Syphilis (adult total) 35 424 45 556
Primary & Secondary 1 50 9 92
Early Latent 14 167 17 206
Unknown Latent 12 75 7 82
Late Latent 8 132 12 176
Congenital Syphilis 0 1 0 0
Female Syphilis 8 88 8 114

 

This graph of 3 lines shows the two-year trend in monthly counts of reported cases for gonorrhea and chlamydia on the primary y-axis. Cases of early syphilis (which includes the primary, secondary, and early latent stages of syphilis) are displayed on the secondary y-axis. Month-to-month, case counts fluctuate more widely for gonorrhea than for chlamydia or early syphilis.

Table 2. Selected STI cases and rates for San Francisco by age and race/ethnicity through, September 2026 only.Rates equal case per 100,000 residents per year based on 2020 US Census Data.
Race/Ethnicity
All Races
Asian
Black / African American
Hispanic
Multiracial
Pacific Islander
White
Category cases rate cases rate cases rate cases rate cases rate cases rate cases rate
All Ages
Chlamydia 2516 383.8 191 86.6 336 994 673 656.1 111 325.7 11 452.1 466 182
Gonorrhea 3397 518.3 305 138.2 303 896.4 824 803.3 331 971.1 13 534.3 1108 432.8
Early Syphilis 217 33.1 15 6.8 32 94.7 78 76 20 58.7 0 0 56 21.9
Ages 10-19
Chlamydia 326 713.3 11 73.6 78 2742.6 116 1024.3 13 296.8 * * 26 229
Gonorrhea 42 91.9 * * 12 421.9 9 79.5 5 114.1 * * * *
Early Syphilis * * 0 0 * * 0 0 0 0 0 0 0 0

Note: * Cells with case counts < 5.
Data not shown for Native Americans due to low counts and for Other and Missing groups due to a lack of denominators to calculate rates.

Table 3. HIV testing among City Clinic patients, September 2026
Year
2026
2025
Test month YTD month YTD
HIV Tests* 692 6416 677 6392
HIV Antibody Positive 3 42 6 39
Acute HIV Infection 0 1 0 3

Note: * HIV tests include all HIV rapid tests, 4th generation HIV tests, and pooled RNA tests.

This line graph shows the two-year trend in monthly visits to San Francisco City Clinic by the patient’s gender and the sex of their sex partners. Of the 5 reported groups, cis men who either have sex with men or sex with men and women make a notably higher number of monthly visits, in the range of 500 to 650 per month. The next two groups that each make 150-200 monthly visits are cis women and cis men who have sex with women only or with partners with unreported sex. The two groups who each make less than 50 visits per month are trans women and patients who identify as genderqueer, non-binary, or another trans identity.

This graph shows quarterly average number of reported recent sex partners over a 3-month period for visitors to San Francisco City Clinic by gender and sex of sex partners over the last two years. Generally, trans women report the highest number of recent sex partners, followed by cis men who have sex with men (including men who also have sex with women) and cis men who have sex with women only or partners with unreported sex and cis women.

Note: Current quarter may be incomplete and is subject to change.

San Francisco monthly STI report now in a new updated format

In our ongoing commitment to making public health data and reports accessible to all San Franciscans, the San Francisco Department of Public Health updated the format of the monthly STI report to meet Web Content Accessibility Guidelines (WCAG) 2.1. The report is now available as an HTML page optimized for desktop viewing, with full functionality on mobile devices as well. If preferred, the report can be saved or printed as a PDF (for best results, use portrait orientation), though some formatting may differ from the HTML version.

This new, more accessible format enhances legibility and usability by increasing overall font size, maintaining proper formatting during zooming, improving document organization, providing alt text for visuals so screen‑reader users can fully access the information, and enhancing graph quality through improved size, color contrast, and line differentiation.



Provider STI Reporting - Phone: 628-217-6653 | Fax: 628-217-6603
www.sf.gov/cityclinic