for people ages 18 years and up (full criteria)
Healthy Volunteers
healthy people welcome
at San Diego, California and other locations
study started
estimated completion
Principal Investigator
by Jill Blumenthal, MD
Photo of Jill Blumenthal
Jill Blumenthal



This is a CCTG sponsored project to determine if those recently screened for HIV would accept assistance to be linked into appropriate health services. After receiving their HIV results, high-risk individuals who test negative will have an option to be linked into a study that offers them Pre-exposure Prophylaxis (PrEP), and individuals who test positive will have an option to be linked into care. If they accept, tested individuals will be in contact with an ALERT specialist that will help facilitate their linkage. The study's primary analysis will analyze how many HIV screened individuals accept the ALERT specialist assistance.

Official Title

CCTG 593: Testing and Linkage to Care, A Multicenter Demonstration Project of the California Collaborative Treatment Group


Design: CCTG 593 is a project to evaluate the uptake and effectiveness of an ALERT specialist serving to 1. link newly diagnosed, HIV infected persons from HIV testing sites to HIV specialist providers, and 2. link confirmed HIV antibody negative persons with continued high risk behaviors to PrEP centers Duration: Each subject who agrees to linkage will receive ALERT follow-up until successful linkage or 60 days following enrollment for linkage to care or 90 days following enrollment for linkage to PrEP, whichever comes first. The duration of the 593 project will be for 3.5 years or until all subjects have been enrolled and successfully linked, or 60 days pass for linkage to care or 90 days for linkage to PrEP. Sample Size: Up to 600 subjects will be tested and offered linkage across all CCTG sites: LA County-USC Medical Center, Harbor-UCLA/City of Long Beach Department of Health and Human Services, UCSD/San Diego Health and Human Services Agency. Study Population: Eligible subjects will include any persons 18 years of age or older who have been tested for HIV at one of the CCTG testing sites (LA County + USC, Long Beach Department of Health and Human Services, and San Diego Health and Human Services Agency).


HIV Positive HIV Seronegative HIV Screening Linkage to PrEP Linkage to Care CCTG 593 HIV Seropositivity Linkage to PrEP or Care


You can join if…

Open to people ages 18 years and up

  • Age 18 years or older
  • Has had an HIV test result form the CCTG Consortium testing site as either positive or negative
  • Ability to provide informed consent
  • English or Spanish Speaking

You CAN'T join if...

  • Severe active substance abuse or mental illness that the investigator feels will interfere with the ability to provide informed consent
  • Acute medical illness that requires transfer to a non CCTG hospital


  • University of California, San Diego
    San Diego California 92103 United States
  • City of Long Beach Department of Health and Human Services
    Long Beach California 90815 United States

Lead Scientist at UCSD

  • Jill Blumenthal, MD
    Associate Professor of Medicine, Medicine. Authored (or co-authored) 22 research publications. Research interests: HIV risk perception · women · young adults · men who have sex with men · medication adherence · pre-exposure prophylaxis · HIV prevention.


in progress, not accepting new patients
Start Date
Completion Date
University of California, San Diego
Study Type
Last Updated