Risk criteria | No. of donors associated with donor-derived transmission events
|
||
---|---|---|---|
HIV | HBV | HCV | |
No. of donors associated with transmission events
|
1
|
14
|
23
|
No. of donors with criteria resulting in IRD designation†
|
|||
Sex with a person known or suspected to have HIV, HBV, or HCV infection
|
0
|
0
|
2
|
Man who has had sex with another man
|
1
|
0
|
0
|
Woman who has had sex with a man who has had sex with another man
|
0
|
0
|
0
|
Sex in exchange for money or drugs
|
0
|
1
|
4
|
Sex with a person who had sex in exchange for money or drugs
|
0
|
4
|
2
|
Drug injection for nonmedical reasons
|
0
|
10
|
19
|
Sex with person who injected drugs for nonmedical reasons
|
0
|
5
|
4
|
Incarceration (confinement in jail, prison, or juvenile correction facility) for ≥72 consecutive hours
|
0
|
8
|
10
|
Newly diagnosed or treated syphilis, gonorrhea, chlamydia, or genital ulcers
|
0
|
1
|
0
|
Child (aged ≤18 months) born to a mother known to be infected with or at increased risk for HIV, HBV, or HCV infection
|
0
|
0
|
0
|
Child breastfed by a mother known to be infected with or at increased risk for HIV infection
|
0
|
0
|
0
|
Hemodialysis
|
0
|
0
|
0
|
Unknown medical or social history
|
0
|
1
|
2
|
Hemodiluted blood specimen used for donor HIV, HBV, or HCV testing | 0 | 0 | 0 |
Table 1. Number of increased risk donors* and risk criteria associated with donor-derived human immunodeficiency virus, hepatitis B, and hepatitis C transmission events reported to the Organ Procurement and Transplantation Network Disease Transmission Advisory Committee — United States, 2008–2018
Source: Organ Procurement and Transplantation Network. Organ Procurement and Transplantation Network Disease Transmission Advisory Committee report database. Richmond, VA: US Department of Health and Human Services, Health Resources and Services, Organ Procurement and Transplantation Network; 2019. https://optn.transplant.hrsa.gov/members/committees/disease-transmission-advisory-committee.
Abbreviations: HBV = hepatitis B virus; HCV = hepatitis C virus; HIV = human immunodeficiency virus; IRD = increased risk donor.
* A total of 38 increased risk donors were identified. Each donor-derived transmission event was associated with a single virus only.
† Increased risk donors could meet more than one risk criteria, and all criteria were included.
|
BOX. Steps in the organ transplantation process related to the U.S. Public Health Service guideline recommendations for assessing solid organ donors and monitoring transplant recipients for human immunodeficiency virus, hepatitis B virus, and hepatitis C virus infection
Recommendation category | 2013 | 2020 |
---|---|---|
Risk assessment of living and deceased donors
|
|
|
|
|
|
|
|
|
Living and deceased solid organ donor testing
|
|
|
|
|
|
|
|
|
Transplant candidate informed consent
|
|
|
|
||
Recipient testing and vaccination
|
|
|
|
||
|
|
|
|
|
|
Collection and storage of donor and recipient specimens
|
|
|
|
||
Tracking and reporting of donor-derived disease transmission events¶ |
Table 2. Comparison of 2013 and 2020 U.S. Public Health Service guideline recommendations* for solid organ donor assessment and transplant recipient monitoring for human immunodeficiency virus, hepatitis B virus, and hepatitis C virus infection
Abbreviations: anti-HBc = antibodies to hepatitis B virus core antigen; anti-HCV= antibodies to hepatitis C virus; anti-HIV-1/2 = antibodies to HIV-1/2; HbsAg = hepatitis B surface antigen; HBV = hepatitis B virus; HCV = hepatitis C virus; HIV = human immunodeficiency virus; IRD = increased risk donor; OPO = organ procurement organization; NAT = nucleic acid testing.
* Only recommendations that were substantially modified from 2013 to 2020 are included. Recommendations that have minor wording changes or have been reorganized are not shown.
† Sources: Bixler D, Annambholta P, Abara WE, et al. Hepatitis B and C virus infections transmitted through organ transplantation investigated by CDC, United States, 2014–2017. Am J Transplant 2019;19:2570–82; Jones JM, Gurbaxani BM, Asher A, et al. Quantifying the risk of undetected HIV, hepatitis B virus, or hepatitis C virus infection in Public Health Service increased risk donors. Am J Transplant 2019;19:2583–93; US Department of Health and Human Services Panel on Antiretroviral Guidelines for Adults and Adolescents. Guidelines for the use of antiretroviral agents in adults and adolescents living with HIV. Bethesda, MD: US Department of Health and Human Services, National Institutes of Health, Office of AIDS Research Advisory Council. https://aidsinfo.nih.gov/contentfiles/adultandadolescentgl.pdf; Chung RT, Ghany MG, Kim AY, et al; AASLD-IDSA HCV Guidance Panel. Hepatitis C guidance 2018 update: AASLD-IDSA recommendations for testing, managing, and treating hepatitis C virus infection. Clin Infect Dis 2018;67:1477–92; Terrault NA, Lok ASF, McMahon BJ, et al. Update on prevention, diagnosis, and treatment of chronic hepatitis B: AASLD 2018 hepatitis B guidance. Hepatology 2018;67:1560–99; Bowring MG, Holscher CM, Zhou S, et al. Turn down for what? Patient outcomes associated with declining increased infectious risk kidneys. Am J Transplant 2018;18:617–24; Croome KP, Lee DD, Pungpapong S, Keaveny AP, Taner CB. What are the outcomes of declining a Public Health Service increased risk liver donor for patients on the liver transplant waiting list? Liver Transpl 2018;24:497–504.
§ Source: CDC; Association of Public Health Laboratories. Laboratory testing for the diagnosis of HIV infection: updated recommendations. Atlanta, GA: US Department of Health and Human Services, CDC. https://stacks.cdc.gov/view/cdc/23447.
¶ No recommendations in this category were substantially modified from 2013 to 2020.
Donor or recipient | Type of assay | Timing of testing |
---|---|---|
Deceased donor
|
Anti-HIV and HIV NAT; total anti-HBc, HBsAg, and HBV NAT; anti-HCV and HCV NAT
|
96 hours before organ procurement
|
Living donor
|
Anti-HIV and HIV NAT; total anti-HBc, HBsAg, and HBV NAT; anti-HCV and HCV NAT
|
As close as possible to the surgery but at least within 28 days before organ procurement
|
Transplant candidate
(pretransplant)
|
CDC HIV testing algorithm*; total anti-HBc, HBsAg, and anti-HBs; anti-HCV and HCV NAT
|
Before transplantation during hospital admission for transplant
|
Transplant recipient (posttransplant) | HIV, HBV, and HCV NAT | 4–6 weeks after transplant† |
Table 3. Testing recommendations for deceased and living donors and for transplant recipients, by type of assay and timing of testing
Abbreviations: anti-HBc = antibodies to hepatitis B virus core antigen; anti-HCV = antibodies to hepatitis C virus; anti-HIV-1/2 = antibodies to HIV-1/2; HbsAg = hepatitis B surface antigen; HBV = hepatitis B virus; HCV = hepatitis C virus; HIV = human immunodeficiency virus; NAT = nucleic acid testing.
* Source: CDC; Association of Public Health Laboratories. Laboratory testing for the diagnosis of HIV infection: updated recommendations. Atlanta, GA: US Department of Health and Human Services, CDC. https://stacks.cdc.gov/view/cdc/23447.
† Clinicians caring for liver recipients should maintain heightened awareness of the potential for delayed appearance of HBV infection and consider additional testing for HBV NAT at 1 year. Solid organ recipients who develop signs or symptoms of liver injury (e.g., jaundice or elevated liver function tests) after transplantation should be retested for viral hepatitis even if previous hepatitis B and hepatitis C testing was negative.
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PHS solicited feedback from its relevant agencies, subject-matter experts, additional stakeholders, and the public to revise recommendations. Data to support the development of revised recommendations were gathered during different phases by the following methods:
CDC conducted scientific studies to determine HIV, HBV, and HCV infection donor laboratory screening practices and the proportion of donors classified as IRDs under policies implemented after publication of the 2013 PHS guideline [28]; estimate the risk for undetected HIV, HBV, or HCV infection in IRDs with negative laboratory screening test results [35]; characterize survival and graft function outcomes of organ recipients with donor-derived HBV or HCV infection [34]; and assess the impact of IRD designation on organ use [36]. These findings have been previously published and were presented to the Advisory Committee for Blood and Tissue Safety and Availability [28],34–36,43.
The 2013 PHS guideline describes 12 medical or social criteria and two other criteria (unknown medical or social history and hemodilution of donor serum specimen used for testing) to assess the risk for recent HIV, HBV, or HCV infection among donors. These criteria were evaluated to determine whether their presence among organ donors was associated with a substantive risk for HIV, HBV, or HCV transmission to recipients despite negative donor serologic and nucleic acid screening test results because of an acute, undetected donor infection (i.e., a window period infection). For all criteria, two methods were used to assess this risk. First, CDC conducted a review of OPTN data on all donor-derived HIV, HBV, and HCV infections investigated, reviewed, and adjudicated by the OPTN ad hoc Disease Transmission Advisory Committee during 2008–2018 to identify reported donor risk criteria (Table 1). Second, CDC performed a review of published literature to determine which risk factors had previously been associated with donor-derived HIV, HBV, or HCV infection. The literature search resulted in 645 citations (Supplementary Appendix 1; https://stacks.cdc.gov/view/cdc/88644). All titles and abstracts were evaluated, and 86 articles that described transmission to recipients were reviewed in detail to ascertain donor risk factors for HIV, HBV, and HCV infections. In addition, the results of a systematic review performed to inform development of the 2013 PHS guideline were reviewed to identify pertinent transmission events [44]. Criteria that had been repeatedly reported to OPTN among donors who were associated with a HIV, HBV, or HCV transmission were not removed as risk criteria in the recommendations presented in this report. A review of the literature did not identify any articles that reported on donor criteria not already identified from a review of OPTN data or a previously known report on donor-derived HIV transmission resulting from hemodilution [10].
Four criteria were not described as donor risk factors in HIV, HBV, or HCV transmission events reported to the OPTN or identified through the literature search; two additional criteria had only been reported as donor risk factors once (Table 1). Of these six criteria, three (woman who has had sex with a man who has had sex with another man; child born to a mother known to be infected with or at increased risk for infection with HIV, HBV, or HCV; and child breastfed by a mother known to be infected with or at increased risk for HIV infection) have rarely been identified among donors and resulted in IRD designation [45]). The other three criteria (hemodialysis; newly diagnosed or treated syphilis, gonorrhea, chlamydia, or genital ulcers; and hemodilution of donor serum specimen used for testing) have frequently been identified among donors and resulted in an IRD designation [45] and were further evaluated.
Hemodialysis was included as a risk criterion in the 2013 PHS guideline because of reports of an association between HCV infection and outpatient dialysis [46,47]. To determine the extent to which hemodialysis increases the risk for acute HCV infection, data from additional sources, including the National Healthcare Safety Network Outpatient Dialysis Center Practices Survey, hepatitis C outbreaks reported to CDC, and the Dialysis Outcomes and Practice Patterns Study, were reviewed [48–50]. Newly diagnosed or treated syphilis, gonorrhea, chlamydia, or genital ulcers was included as a risk criterion in the 2013 PHS guideline as a marker primarily for potential acute HIV infection. Therefore, an additional literature search was conducted to ascertain the risk for acute HIV infection among persons with a recent diagnosis of a sexually transmitted disease (STD) in the United States (Supplementary Appendix 1; https://stacks.cdc.gov/view/cdc/88644).
Organ donors can receive infusions of crystalloid or colloid solution or blood products, resulting in a hemodiluted specimen, which can produce false-negative results for HIV, HBV, and HCV infection testing [1]. Hemodilution of a donor serum specimen used for testing has been reported only once before as a donor risk factor, when it resulted in a donor-derived HIV transmission event in 1986 [10,43]; the donor was screened with an HIV serology test. Hemodilution of donor serum has not been associated with donor-derived transmission of HIV, HBV, or HCV since then as new serologic tests, antigen tests, and NAT have been implemented. A man who has had sex with another man has been repeatedly reported as a risk factor for donor-derived HIV transmissions, most recently in 2009 [12].
The Advisory Committee for Blood and Tissue Safety and Availability consists of 31 members, including subject-matter experts on blood, organ, or tissue safety; professional organization representatives; patient advocates; and nonvoting ex officio members from HHS [51]. All members are required to submit potential conflict of interest statements, which are reviewed by the Office of the Assistant Secretary of Health ethics office. No conflicts of interest were identified.
The committee was convened on April 15–16, 2019, to provide advice on revising the 2013 PHS guideline recommendations [43]. The committee considered epidemiologic data related to donor demographics and disease transmission events; scientific evidence pertaining to the efficacy of NAT (including in the setting of hemodilution) in identifying recently infected organ donors; current donor risk identification and HIV, HBV, and HCV infection screening methods; use of IRD organs; availability of effective therapies and transplant recipient outcomes for HIV, HBV, and HCV infections; and current practices for monitoring recipients for unexpected HIV, HBV, and HCV transmission. Members of external stakeholder groups presented opinions on the impact of the 2013 PHS guideline recommendations on organ safety, availability, and use and suggested revisions to the recommendations. The committee discussed the most appropriate terminology to characterize donors with risk factors for recent HIV, HBV, and HCV infections (e.g., IRD), which donor medical and social criteria are significantly associated with a risk for recent infection, and changes to donor and recipient testing recommendations. In addition, the committee provided specific input to improve transplant center and transplant candidate informed consent and decision-making and enhance organ use.
Among the committee’s pertinent recommendations were the following [43]:
The diversity of opinions expressed during the deliberations of the Advisory Committee for Blood and Tissue Safety and Availability were considered, including the use of a term to designate organ donors with HIV, HBV, or HCV infection risk factors. Proposed revisions to the 2013 PHS guideline recommendations were published in the Federal Register [42] on August 27, 2019, to solicit feedback from the public. During the comment period (August 27, 2019–October 10, 2019), 38 comments were received, including 21 from OPOs, eight from professional organizations, seven from transplant centers, and two from other organizations. These comments were reviewed and considered when developing and modifying recommendations.
On August 27, 2019, a federal workshop was held to discuss transplantation of organs from HCV-viremic donors to HCV-negative recipients (Federal Workshop on Transplantation from Hepatitis C Infected Donors; unpublished data, 2019). Attendees included relevant representatives from federal agencies, transplant centers, and professional societies. Attendees gave presentations and discussed the epidemiology of HCV infections, ethics of transplanting organs from HCV-viremic donors to HCV-negative recipients, the use of direct acting antiviral (DAA) therapy as prophylaxis or treatment, and guiding principles for transplant centers to consider when transplanting organs from HCV-viremic donors to HCV-negative recipients. Considerations included in this guideline are based on this workshop and are not required to be incorporated into OPTN policy.