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Annual DHAS HIV Coordinator’s Meeting 2 010. PRESENTERS: Dr. Evan Cadoff Dr. Eugene Martin Joanne Corbo UMDNJ – Robert Wood Johnson Medical School Somerset, NJ. Rapid HIV Testing in NJ. Common Issues on Monthly Site Visits Joanne Corbo Program Manager, NJ HIV.

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annual dhas hiv coordinator s meeting 2 010

Annual DHAS HIV Coordinator’s Meeting2010

PRESENTERS:

Dr. Evan Cadoff

Dr. Eugene Martin

Joanne Corbo

UMDNJ – Robert Wood Johnson Medical School

Somerset, NJ

rapid hiv testing in nj

Rapid HIV Testing in NJ

Common Issues on Monthly Site Visits

Joanne Corbo

Program Manager, NJ HIV

common issues with record keeping
Common Issues with Record Keeping
  • Incomplete Cognition log sheets.
  • Not entering their CLIS ID Number, and/or entering an incorrect CLIS ID Number.
  • Not writing in the comment box when entering a code – example 3 or 6.  If invalid or a manufacturer error please state that and why.
  • Crossing out the lines on the log sheet and filling in above cross out
  • Using 09 forms and rewriting over 09 to enter in the year 10 or writing outside the box.
  • Some sites are not faxing in the log sheets at the end of the month
common issues with record keeping continued
Common Issues with Record Keeping(Continued)
  • Log sheets for the month must be faxed, by the end of the month, even if the sheet is not completed.
  • Do Not copy the log sheets.
  • Do Not send temperature log sheets and cover pages through the Cognition fax  
  •      number
  •  ONLY the log sheets should come through Cognition (732) 743-3206 or (732) 743-3632.
  • ALL OTHER forms  to (732) 235-9012 or 866-238-1469.
  • Some Non RWJ sites are not using the log sheets at all.!! Cognition Log sheets need to be used
rapid hiv testing in nj1

Rapid HIV Testing in NJ

Discordant Analysis in Rapid HIV Testing

Implementation of Rapid-Rapid

New Directions

Eugene G. Martin, Ph.D.

Professor of Pathology and Laboratory Medicine

UMDNJ – Robert W. Johnson Medical School

topics
Topics
  • Discordant Analysis 2009
    • Trends
    • Rapid Test Product Performance
    • Specificity
    • Oraquick re-formulation of manufacturing process  Improved product specificity
  • Rapid-Rapid Initiative 2009
  • New Directions in Rapid Testing
    • Narrowing the Detection Window
      • Acute HIV Initiative
      • New Products – Determine Combo
rapid hiv testing in nj2

Rapid HIV Testing in NJ

2009

DISCORDANT ANALYSIS

trend analysis
Trend Analysis

SUMMARY

  • Rapid HIV Discordants are rare events
  • Many factors are involved: device, operator, experience
  • 2009 – Dramatic decline in discordants
    • Is it product or training?

RWJ Sites ONLY

discordant analysis 2009
Discordant Analysis 2009
  • Oraquick
    • 8 Oral Discordants – Last one reported: 4/9/2009
    • 3 Blood Discordants – Last one reported: 5/30/09
  • 14 Non-RWJ sites REPORTED
rapid hiv testing in nj3

Rapid HIV Testing in NJ

STATUS OF RAPID-RAPID IMPLEMENTATION

status of the rapid rapid initiative
Status of the Rapid-Rapid Initiative
  • What is ‘Rapid-Rapid’
  • What is the NJ implementation process
  • Volume/performance figures 2009
  • The CDC Surveillance Taskforce data - two rapids verify a positive HIV test 99.2% of the time
  • AHEAD: Efforts to recruit higher prevalence, non-RWJ sites to participate in the next phase of roll-out
2005 disposition of confirmed hiv
Problem

Preliminary Positive clients fail to return for results (25.2%)

NAP succeeds ONLY 20% of the time in locating these clients

Solution

Confirmatory testing on-site, same day

Not yet accepted by the FDA

In use, high prevalence areas worldwide

2005 - Disposition of Confirmed HIV+
evolving issues in rapid testing
Evolving Issues in RAPID TESTING
  • Sensitivity Issues:
    • Rapid HIV Tests Measures Antibodies to HIV
    • They DO NOT Measure HIV RNA or DNA
  • How Sensitive are rapid HIV tests?
    • At least as sensitive as more complex EIA technology used in hospitals and laboratories
    • In some cases more sensitive than the Western blot, the so-called ‘Gold Standard’ for validation. … this creates problems
why run a second test
Why run a second test?
  • Specificity of a testing algorithm
    • Builds upon the specificity of a test
    • ALL laboratory tests have a
      • A sensitivity – i.e. the ability to call a true positive, positive
      • A specificity – i.e. the ability to call a true negative, negative
  • Traditionally the Western blot, improves the overall specificity of the testing algorithm.
western blot limitations nj data
Western blot Limitations – NJ DATA
  • 7.1% of positives could not be confirmed because specimens were not collected
  • 25.8% did not return for results of confirmatory Western Blot
  • ONLY 70.1% of confirmed positives got their confirmed result!!
    • ---------------------------------------------- -
  • Western Blot confirmation has an effective sensitivity as low as 70.1%
rapid testing algorithms rapid rapid
Rapid Testing Algorithms“Rapid-Rapid”
  • Principle:
    • Two different immunoassays that employ different HIV antigens to search for HIV antibodies will verify the HIV result >99% of the time
  • Outcome
    • Could we potentially eliminate the western blot as a confirmatory assay and substitute a second rapid HIV test???
rolling out rapid rapid
Rolling out ‘Rapid-Rapid’
  • VALIDATION OF THE CONCEPT
  • SHARING THE EFFORT
  • PRESENTATION at numerous national conferences: APHA, HIV Prevention, IDSA, etc.
  • IMPLEMENTATION DECISION: Rapid-Rapid testing at NJ HIV sites directed by RWJMS – 2009 HIV Coordinators Conference
  • IMPLEMENTATION PROCESS: Funding from supplemental funding from CDC, we began the roll-out in December, 2009.
validation studies 2004 8
Validation Studies – 2004-8
  • Goal – To satisfy ourselves that a second, independent rapid HIV test could reliably identify false positive HIV tests
    • 2004 – Using residual serum, we confirmed all Western blot positive sera obtained in the previous year and available at the Public Health Labs
    • 2005-8:
      • Using residual sera and plasma samples to confirm that a second independent rapid HIV test could reliably identify false positive HIV tests
rapid confirmation trial
Rapid confirmation trial

15,923 OraQuick tests statewide

363 prelim positive samples to state lab for confirmatory testing

355 Western Blot positive

8 Western Blot negative

A second rapid test – Unigold identified all 8 false positive rapids

  • July 1, 2004 through April 19, 2005
history of our rta selection
History of our RTA Selection
  • Oraquick (Oral or Fingerstick) were both in use in NJ from 2004 on.
  • StatPak was introduced in NJ at a significant number of sites 2008
  • INITIAL SCREENING: EITHER OraQuick (FS or O) or StatPak
  • VERIFICATION: Trinity Unigold
  • Two stage process to minimize:
    • Issues of training
    • Issues of competency assessment
    • Issues of required QC
    • A discordant situation in stage two would immediately bring the specimen and the client to the attention of clinicians for definitive follow-up
    • Healthcare linkage could be achieved on the basis of two tests taking less than ½ hr.
  • Since UniGold was not labeled for HIV-2 detection, we opted to initially screen by Oraquick or StatPak and verify by UniGold. If it turned out that there was a problem due to HIV-2 detection, it would have triggered central support.
rapid rapid implementation
Rapid-Rapid Implementation
  • PLAN:
    • December, 2008: 3 pilot sites began the ‘roll-out’
    • Sites of high prevalence first, lower prevalence later
    • Policies, Procedures, Counseling Messages and Forms were completed for the entire system available before training
    • Available on the ‘web’: http://www.njhiv1.org
  • EXPECTATIONS:
    • Doesn’t eliminate Western blot confirmation, BUT allow immediate linkage to care reliably!
    • Less than 1 in 100 would later be removed from care because of a failure to confirm
  • UNKNOWNS: What will be the real world performance of a rapid test in a confirmatory setting?
    • Does reducing the delay really improve the linkage to care?
slide33

Diversity of sites using an RTA

NJ HIV – May, 2009

11/17/2014

who gets linked to care
Who Gets Linked to Care
  • 74% of ‘verified’ HIV positives receive appts on the same day
  • 26% DID NOT receive appts on the same day!!
  • Site Specific Issues - Ongoing
  • How to improve linkage
linkage to care survey
Linkage to Care - Survey
  • It’s not too difficult in NJ to schedule a physician appointment – 6/10 sites could schedule appt 90% of time on same day as RTA positive
  • Obtaining an appointment on the same day was more difficult --- only 3/10 sites were able to accomplish this linkage.
the next phase
The Next Phase
  • Expand Rapid-Rapid Testing
    • Seeking non-RWJ sites to implement Rapid-Rapid.
    • Goal: Linkage to care on the day HIV result is verified.
  • Possible Elimination of the Confirmatory Western blot
    • Current surveillance definition requires IFA, Western blot or RNA testing – a CDC taskforce is addressing this issue. – it matters because funding is influenced!!
rapid hiv testing in nj4

Rapid HIV Testing in NJ

Future Directions

rapid diagnostic hiv assays
Rapid Diagnostic HIV Assays
  • LIMITATIONS:
    • Detects HIV antibodies, not the HIV virus
    • Western Blot Confirmation or IFA MUST BE performed.
      • As rapid tests become more sensitive, wblot confirmation becomes more problematic.  More discordant results
    • Client message: PRELIMINARY POSITIVE on 1st Visit or NEGATIVE
hiv antibody window is the problem
HIV ANTIBODY WINDOW is the problem

HIV Antibody – 3rd Generation 22 Days

  • Ramp-up ViremiaDoublingTime = 21.5 hrs
  • Peak Viremia106 – 108 gEq/mL
  • Viral set-point102 – 105 gEq/mL
  • WINDOW
    • Antibody – 22 Days
    • Antigen – 16 Days
    • Pooled NAT – 14 Days
    • Individual NAT – 11 Days

P24 Ag 16 Days

PooledNAT

14 Days

Individual NAT

11 Days

0 10 16 22 DAYS

ANTIBODY WINDOW

opportunity summary
Opportunity Summary
  • ~ 55,000 new HIV infections per year in the US
  • Reaching and testing those at risk
    • ~ 25% of the 850,000 - 950,000 HIV+ people in the United States are unaware of their status
    • ~ 30% or more who test positive for HIV by conventional testing do not receive their results!!
  • Stop the cycle by interfering with transmission
    • More than 50% of transmission occurs in the earliest stages of an HIV infection!
    • If we detect infections at the earliest stages possibility of interrupting the cycle of transmission.
    • Once the antibody appears, infectivity is diminishing
  • How to detect early infections in a simpler, more economical manner
natural history hiv infection
Natural History - HIV Infection

Couthino et al., Bulletin of Mathematical Biology 2001

detecting hiv virus before hiv antibody appears
Detecting HIV virus before HIV antibody appears
  • Pooled NAT on antibody negative blood
    • Blood donor facilities use to protect blood recipients since the late 1990’s.
    • Concept – If you’re in the window phase, you have no antibody, you may have no p24 Ag, but you still have the virus
    • As of 2001, 100% of the US blood supply was tested by pooled NAT. Yield: 8 HIV antibody negative infected units in 23 million tested units. 2 p24 Ag+ units also detected. (~1:3,292,400)
    • Between 2003-7 discussions in the HIV community regarding the use of pooled NAT in high risk individuals.
      • Expensive
      • Cases eventually demonstrate antibody, so…
      • Why bother?
    • Crucial bit of information missing to justify pooled NAT!
the missing link
The missing link
  • More than 50% of transmission occurs in the earliest stages of an HIV infection!
  • If we detect infections at the earliest stages, there is the possibility of interrupting the cycle of transmission.
  • Once the antibody appears, infectivity is already diminishing
the question
The Question
  • If we have the capacity to check p24 Ag with a rapid test and it narrows the window for detection by 6 days is that good enough?
  • We have implemented pooled NAT testing from antibody negative blood at high prevalence sites where individuals who are recently infected might logically go, if they were feeling poorly.
    • University Hospital
    • St. Michael’s
  • In San Francisco, last year they identified 39 individuals with Acute HIV infection, but the majority WOULD have been identified with access to p24 Ag testing!
  • What about New Jersey?
new jersey hiv
New Jersey HIV

We’ll let you know…

Next year!

And Most Importantly

Thanks for all you do!

thanks to
Thanks To:

NJDHSS/DHAS

  • Sindy Paul, MD, MPH*
  • Linda Berezny, RN
  • Maureen Wolski, BS
  • Aye Maung Maung

NJDHSS/PHEL

RWJMS

  • Evan Cadoff, MD
  • Eugene Martin, Ph.D.
  • Gratian Salaru, MD
  • Joanne Corbo, MBA, MT (ASCP)
  • Claudia Carron, MSN, RN
  • Franchesca Jackson, BS (Biology)
  • Nisha Intwala, BS, MT (ASCP)
  • Aida Gilanchi, BS, MT
  • Mary Ann Garrihy, BS, MT (ASCP)
  • Patricia Riberio, BS, MT (ASCP)
  • Lisa May
  • Karen Williams

All site coordinators and counselors

throughout New Jersey

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