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14 novembre 2017, 09:45

HIV Infections Decline in San Francisco, Hit Record Low

HIV Infections Decline in San Francisco, Hit Record Low - immagine 1

Researchers in San Francisco identified 223 new HIV diagnoses in 2016 — the lowest ever recorded in the city, Healio reports.

Meanwhile, treatment coverage and viral suppression rates were at an all-time high, according to Susan Scheer, PhD, MPH, director of the HIV Epidemiology Section at the San Francisco Department of Public Health, and colleagues. The researchers attributed this progress to a series of citywide HIV prevention and treatment programs that are now formalized under San Francisco’s “Getting to Zero SF” effort. The initiative is led by a multisector consortium of public health, academic and community-based organizations. Their goals are to have zero new HIV infections, zero HIV-associated deaths and zero HIV stigma and discrimination in the city.

For their study, recently published in Clinical Infectious Diseases, Scheer and colleagues examined trends in HIV before and after the Getting to Zero SF interventions were rolled out in 2010. The interventions include:

  • administration of ART regardless of CD4 cell count (2010);
  • increasing coverage of and targeted HIV testing (2011);
  • relinking HIV patients who have fallen out of care (2011);
  • initiating same-day ART at HIV diagnosis (2012); and
  • expanding access to pre-exposure prophylaxis (PrEP) for high-risk groups (2013).

Study data showed that the total number of new HIV diagnoses declined from 473 in 2009 to 329 in 2014. More recent data released by the city’s health department revealed even fewer diagnoses in 2016 — just 223. According to the researchers, the decline in new HIV diagnoses in San Francisco mirrors an overall trend in the United States. However, the proportion of new diagnoses increased among men, Asian/Pacific Islanders and Latinos, and men who have sex with men, or MSM.

In other results, linkage to care within 3 months increased from 85.8% in 2009 to 91.8% in 2014; ART initiation within 1 year of diagnosis increased from 63.2% to 90.7%; viral suppression within 1 year of HIV diagnosis increased from 49.2% to 82.3%; and the proportion of patients who developed AIDS within 3 months decreased from 26.9% to 16.4%.

There were substantial reductions in the average time from HIV diagnosis to ART initiation (9 months vs. 1 month) and viral suppression (11 months vs. 3 months). However, there were no significant changes in the proportion of patients who died within 1 year of diagnosis, which remained below 4%.

To ensure that progress continues, the Getting to Zero SF consortium will expand its citywide HIV programs, according to the researchers. By 2020, the consortium aims to reduce 90% of new HIV diagnoses and HIV-associated deaths that were reported in 2013.

“This would require that new diagnoses decrease from 399 in 2013 to 40 in 2020, and HIV-associated deaths from 261 in 2013 to 26 in 2020,” the researchers wrote. Scheer and colleagues said there is a particular need to improve programs that focus on retention in care. They also noted that it will be important to ensure that patients continue to have access to care.

Autore: Marina Shegay

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