El diagnóstico de la infección por el virus de la hepatitis C en España: una oportunidad para mejorar

Generalized implementation of reflex testing of hepatitis C in Galicia: Results for reflection

INTRODUCTION

The implementation of reflex testing of active hepatitis C virus (HCV) infection, together with the incorporation of informative alerts in the reports, has shown that it significantly reduces the number of patients who were not referred for therapeutic evaluation.

METHODS

Since the implementation in 2018 of the DUSP in the Microbiology Services of the Galician Health Service hospitals (SERGAS), new diagnoses of active HCV infection have been retrospectively identified and characterized.

RESULTS

In 2018, a total of 258 patients with unknown active HCV infection (70,2% men, middle age 52 years) were identified through by reflex testing from consultations of primary and specialized care units in 54.8% and 39.8% respectively, as well as from other locations by 5.4%. Of the 258 patients, 81.0% were referred for therapeutic evaluation, with a median of 54 days from their diagnosis. In 58.3% of the cases the reflex testing was determined by viral load, the predominant genotype was 1a (30,7%) and 52,1% were treated, observing sustained viral response (SVR) in 93.7 % of these.

CONCLUSION

The generalized implementation of the HCV reflex testing together with informative alerts in Galicia has allowed us to obtain referral rates for treatment similar to those obtained in other studies. However, there is a wide variability between the different centers that require the incorporation of improvements, such as training or the use of rescue measures for optimization.

One-step diagnosis strategy together with multidisciplinary telematics referral perform an effective approach for identifying and treating patients with active Hepatitis C infection

INTRODUCTION AND OBJECTIVES

Implementation of a one-step strategy for diagnosis of active Hepatitis C virus (HCV) infection would encourage the early diagnosis and reduce the time to access antiviral treatments. The aim of this study was to evaluate the impact of a HCV one-step diagnosis compared to the traditional two-step protocol in terms of the time required for patients to be seen by specialists and the time taken to start antiviral treatment.

MATERIAL AND METHODS

A comparative study was carried out to assess two diagnostic algorithms (one-step and two-step) for active HCV infection. Serological markers were quantified using the same serum sample to determine both anti-HCV antibodies (HCV-Ab) and HCV core antigen (HCV-cAg) by Architect i2000 SR kit. In this period, a multidisciplinary procedure was started for telematics referral of viremic patients.

RESULTS

One-step approach reduced the time required for patient HCV diagnosis, referral to a specialist, access to treatment, and eliminated the loss of patients to follow-up. Significant differences were observed between one-step and two-step diagnosis methods in the time required for patients to be seen by a specialist (18 days [Interquartile range (IQR) = 14-42] versus 107 days [IQR = 62-148]) and for the initiation of treatment (54 days [IQR = 43-75] versus 200 days [IQR = 116-388]), mainly for patients with advanced fibrosis (35 days [IQR = 116-388] versus 126 days [IQR = 152-366]).

CONCLUSIONS

Use of HCV-cAg has proven to be a useful tool for screening patients with active hepatitis C. The development of a multidisciplinary protocol for the communication of results improved the efficiency of the care process.

Late presentation of chronic HBV and HCV patients seeking first time specialist care in Spain: a 2-year registry review

Chronic viral hepatitis infection affects an estimated 325 million people globally. People who initiate treatment after significant disease progression face increased risk of severe liver complications and death. Data are scarce on the characteristics and risk factors of people who present late to care in Spain and globally. Data were collected from January 2018 to December 2019 to report late presentation (LP) to specialist care at 11 large university hospitals in Spain to assess related risk factors using a multivariable logistic regression model. 2290 (CHB = 505, CHC = 1785) patients were analysed, with 581 (25.2%) presenting late. Hepatitis C patients more frequently reported LP compared to hepatitis B patients (28.1% vs 15.0%; p < 0.001). Older age (p < 0.001), being male (p < 0.001), being Spanish-born (p < 0.001), and having an unknown origin of referral (p = 0.08) were associated with a higher likelihood of LP. Advanced liver disease was identified in 533 (23%) patients and late-stage liver disease in 124 (5.4%). LP, including with irreversible liver damage, to viral hepatitis specialist care is frequent in Spain, despite being a country with unrestricted treatment access. Initiatives to reduce LP should specifically target men, older individuals, foreign-born populations for CHB, and Spanish nationals for CHC.

Survey of diagnostic resources for STI in Spain

BACKGROUND

Scarce information is available on the resources to deal with the Sexually Transmitted Infections (STIs), both in the clinic and in the laboratory. The objective is to describe and know the reality of the clinics and laboratories that treat these infections in Spain.

METHODS

Cross-sectional observational study with data collection through a survey aimed at the members of the GEITS Group.

RESULTS

Responses were obtained from 24 centers (response rate 38.1%) belonging to 10 Autonomous Communities. Regarding STI consultations, 38% require that the patient present a health card to provide assistance, and 31.8% only provide it by referral from another doctor. The 52.4% perform diagnostic methods in the care center. Regarding laboratories, 18.2% do not offer immediate response diagnostic tests, although 100% have PCR against Neisseria gonorrhoeae and Chlamydia trachomatis, 47.8% against Mycoplasma genitalium and 65% detect lymphogranuloma venereum genotypes. All laboratories continue to perform culture and gonococcal sensitivity techniques, and 20% perform molecular methods for detection of MG antimicrobial resistance.

CONCLUSION

There is great variability in the provision of human and material resources both in the clinics and in the laboratories that attend STIs. In a significant number of centers there are limitations for patient access. Although laboratories have molecular biology technologies, not all of them offer immediate response tests. All laboratories detect N. gonorrhoeae infection by PCR and also by culture, which allows sensitivity testing in all centers.

Towards the elimination of hepatitis C: implementation of reflex testing in Andalusia

BACKGROUND AND AIM

undiagnosed hepatitis C virus (HCV) infection and/or inadequate access to care are barriers to the elimination of HCV. Reflex testing has proven to facilitate referral to care, treatment and viral elimination. In this study, a reflex testing program was implemented in Andalusia and its impact on access to care was evaluated.

PATIENTS AND METHODS

an observational, retrospective and prospective study was performed across diagnostic laboratories responsible for HCV diagnosis in southern Spain. After surveying the barriers to performing reflex testing, the number of patients that were not referred for care in 2016 was retrospectively studied (pre-reflex cohort). Subsequently, several measures were proposed to overcome the identified barriers. Finally, reflex testing was implemented and its impact evaluated.

RESULTS

the pre-reflex cohort included information from 1,053 patients. Slightly more than half of the patients (n = 580; 55%) visited a specialist for treatment evaluation during a median period of 71 days (interquartile range = 35-134) since the date of diagnosis. The post-reflex cohort (September 2017 to March 2018) included 623 patients. Only 17% (n = 106) of the patients had not been referred for care or evaluated for treatment in a median period of 52 days (interquartile range = 28-86).

CONCLUSIONS

in 2016, nearly half of new HCV diagnoses in southern Spain were not referred for care. Barriers to the implementation of reflex testing were overcome in our study. Moreover, this strategy was effectively implemented in 2017. Reflex testing contributed to improving referral for care. This program will contribute to the micro-elimination of hepatitis C in Spain.

Recapture of patients with an incomplete diagnosis of hepatitis C virus infection

BACKGROUND

hepatitis C virus (HCV) antibody tests have been performed since the 90s, although HCV-RNA (viral load) determination was not always performed. Some of these patients may be actively infected and not be aware of it. Here, we describe a procedure to capture these subjects and complete their diagnosis.

METHODS

the historical laboratory results of Navarra were reviewed and individuals who were positive for antibodies against HCV (anti-HCV) and had not undergone HCV-RNA testing were identified. In September 2018, each general practitioner (GP) was informed about their patients and given precise instructions for completing the diagnosis. The procedure was assessed until December 2019.

RESULTS

two hundred and eighty-nine anti-HCV positive patients were detected for whom active infection had not been discarded. Two were HIV-positive and six had already died. GPs were asked to assess the remaining 281 subjects. By the end of 2019, a new blood test had been performed in 187 (67 %) patients, 5 % decided not to do it, 4 % were living outside of Navarra, 3 % could not be contacted and the GP considered that it was not justified in 2 % of cases. Thus, 19 % remained to be contacted. From the 187 assessed patients, active infection was confirmed in 52 (28 %) individuals, 40 % were false positives and HCV-RNA was undetectable in 31 %. Regarding the 52 actively infected subjects, 34 had already initiated antiviral therapy and three were hospitalized due to decompensated cirrhosis, from which one patient died.

CONCLUSIONS

the strategy to recapture individuals with an incomplete HCV infection diagnosis was effective to detect active infections and subsequent initiation of antiviral therapy.

Hepatitis C standards of care: A review of good practices since the advent of direct-acting antiviral therapy

Significant steps must be taken to reduce the global incidence and prevalence of hepatitis C virus (HCV) and mortality from HCV infection to achieve the WHO goal of eliminating viral hepatitis as a public health threat by 2030. Proper epidemiological surveillance of the full continuum of care is essential for monitoring progress and identifying gaps that need to be addressed. The tools required for elimination have largely been established, and the issue at hand is more how they should best be implemented in different settings around the world. Documenting good practices allows for knowledge exchange to prevent transmission and improve health outcomes for people with HCV. This review found 13 well documented HCV good practices that have become the standard of care or that should become the standard of care as soon as possible. In 2013, highly effective direct-acting antiviral therapy became available, which has cure rates of over 95%. Together with this new therapy, evidence-based good practices can help countries eliminate viral hepatitis C.

Generalized implementation of reflex testing of hepatitis C in Galicia: Results for reflection

INTRODUCTION

The implementation of reflex testing of active hepatitis C virus (HCV) infection, together with the incorporation of informative alerts in the reports, has shown that it significantly reduces the number of patients who were not referred for therapeutic evaluation.

METHODS

Since the implementation in 2018 of the DUSP in the microbiology services of the Galician Health Service hospitals (SERGAS), new diagnoses of active HCV infection have been retrospectively identified and characterized.

RESULTS

In 2018, a total of 258 patients with unknown active HCV infection (70,2% men, middle age 52 years) were identified through by reflex testing from consultations of primary and specialized care units in 54.8% and 39.8% respectively, as well as from other locations by 5.4%. Of the 258 patients, 81.0% were referred for therapeutic evaluation, with a median of 54 days from their diagnosis. In 58.3% of the cases the reflex testing was determined by viral load, the predominant genotype was 1a (30,7%) and 52,1% were treated, observing sustained viral response in 93.7% of these.

CONCLUSION

The generalized implementation of the HCV reflex testing together with informative alerts in Galicia has allowed us to obtain referral rates for treatment similar to those obtained in other studies. However, there is a wide variability between the different centers that require the incorporation of improvements, such as training or the use of rescue measures for optimization.

Principles for implementing a population screening strategy for hepatitis C in Spain

BACKGROUND

hepatitis C, besides health impairment, results in significant loss of productivity and diminished quality of life, and noticeably contributes to health expenditure increases. Because of all this, the Spanish Ministry of Health (Ministerio de Sanidad, Consumo y Bienestar Social - MSCBS) implemented in 2015 a strategic plan for managing hepatitis C (Plan Estratégico para el Abordaje de la Hepatitis C - PEAHC) within the National Health System. However, the PEAHC includes no screening plan. The MSCBS developed a framework document on population screening (Documento Marco sobre Cribado Poblacional) that defines the criteria a disease must meet in order to consider implementing a screening program. Specifically, it defines 4 criteria related to the health issue, 4 related to the screening test, and 3 criteria dealing with diagnosis confirmation and treatment.

OBJECTIVE

to identify whether there is scientific evidence to support hepatitis C meeting the criteria to be considered a disease qualifying for a population screening strategy in Spain.

METHODS

a literature search for scientific evidence concerning each required criterion for implementing a population screening plan for hepatitis C in Spain.

RESULTS

sufficient scientific evidence was found to support hepatitis C meeting the criteria required by the MSCBS for the implementation of a population screening program.

CONCLUSIONS

according to the available scientific evidence, hepatitis C in Spain meets the required criteria to qualify for consideration of population screening plan.

Elimination of hepatitis C. Positioning document of the Spanish Association for the Study of the Liver (AEEH)

The Spanish Association for the Study of the Liver (AEEH) is convinced that the elimination of hepatitis C virus (HCV) in Spain is possible as long as we are able to use the resources and tools necessary for it. This document reflects the position of the AEEH regarding the elimination of HCV, establishing a wide range of recommendations that can be grouped into five categories: 1) Screening of HCV according to age, of the existence of classic acquisition risk factors of infection, active search of previously diagnosed patients and development of microelimination strategies in vulnerable populations; 2) Simplification of HCV diagnosis (one-step diagnosis and diagnosis at the point of patient care); 3) Simplification of patient treatment and improvement of care circuits; 4) Health policy measures, and, finally, 5) Establishment of HCV elimination indicators.

Survey of diagnostic resources for STI in Spain

BACKGROUND

Scarce information is available on the resources to deal with the Sexually Transmitted Infections (STIs), both in the clinic and in the laboratory. The objective is to describe and know the reality of the clinics and laboratories that treat these infections in Spain.

METHODS

Cross-sectional observational study with data collection through a survey aimed at the members of the GEITS Group.

RESULTS

Responses were obtained from 24 centers (response rate 38.1%) belonging to 10Autonomous Communities. Regarding STI consultations, 38% require that the patient present a health card to provide assistance, and 31.8% only provide it by referral from another doctor. The 52.4% perform diagnostic methods in the care center. Regarding laboratories, 18.2% do not offer immediate response diagnostic tests, although 100% have PCR against Neisseria gonorrhoeae and Chlamydia trachomatis, 47.8% against Mycoplasma genitalium and 65% detect lymphogranuloma venereum genotypes. All laboratories continue to perform culture and gonococcal sensitivity techniques, and 20% perform molecular methods for detection of MG antimicrobial resistance.

CONCLUSION

There is great variability in the provision of human and material resources both in the clinics and in the laboratories that attend STIs. In a significant number of centers there are limitations for patient access. Although laboratories have molecular biology technologies, not all of them offer immediate response tests. All laboratories detect N.gonorrhoeae infection by PCR and also by culture, which allows sensitivity testing in all centers.

Reflex testing. A key tool for the elimination of hepatitis C

Hepatitis C is a major cause of liver cirrhosis and hepatocellular carcinoma, as well as the primary indication for liver transplant in Europe. The highly effective direct-acting antivirals currently available make it possible to achieve the hepatitis C elimination targets set by the World Health Organization. For this, population screening and reflect testing are fundamental strategies.

Hepatitis C reflex testing in Spain in 2019: A story of success

BACKGROUND

Reflex testing is necessary to achieve the objectives of hepatitis C elimination. However, in 2017 only 31% of Spanish hospitals performed reflex test. As a consequence of that finding, reflex testing was recommended by scientific societies involved in the diagnosis and treatment of hepatitis C.

OBJECTIVE

To evaluate the degree of implementation of reflex testing in 2019 and to know the implementation of rapid diagnostic and/or dried blood spot testing (RDT and / or DBS) in Spanish hospitals.

METHODS

Cross-sectional study through a survey conducted in October 2019 to Spanish general hospitals with at least 200 beds, public or private with teaching accreditation.

RESULTS

129 (80%) hospitals responded. Reflex testing is performed by 89% of the centers vs. 31% in 2017 (P<.001). From 2017 to 2019, centers using alerts to improve continuity of care increased from 69% to 86% (P=.002). In 2019, 11% of centers can determine anti-HCV in dried spot, 15% viremia in dried spot, 0.85% anti-HCV in saliva, and 37% of antibodies and/or viremia with point of care test. 43% of hospitals have at least one diagnostic method with RDT and/or DBS.

CONCLUSION

The implementation of reflex testing has increased significantly, reaching 89% of hospitals in 2019. The recommendations of scientific societies could have contributed to the implementation of reflex testing. On the other hand, access to RDT and/or DBS is insufficient and initiatives are needed to improve their implementation.

Utility of a one-step screening and diagnosis strategy for viremic HCV infection among people who inject drugs in Catalonia

BACKGROUND

In Catalonia (Spain), people who inject drugs (PWID) face numerous barriers to access to mainstream healthcare services for hepatitis C confirmatory diagnosis and treatment, so simplified testing strategies for viremic infection are urgently needed. Among PWID attending harm-reduction services in Catalonia, we aimed (i) to assess the utility of an in-house HCV-RNA detection assay on dried blood spots (DBS) as a one-step screening and confirmatory diagnosis strategy for hepatitis C, (ii) to estimate the prevalence of viremic HCV infection, and (iii) to identify factors associated with unawareness of viremic infection.

METHODS

A cross-sectional study of current PWID (N  = 410) was performed in four harm-reduction services. All participants underwent HCV antibody point-of-care testing and parallel DBS collection for centralized RNA testing. An epidemiological questionnaire was administered. Paired EDTA-plasma samples were additionally collected for HCV viral load testing in 300 participants.

RESULTS

HCV-RNA testing from DBS was feasible and showed 97.2% sensitivity and 100% specificity for viral loads >3000 IU/mL in real-life conditions. No significant differences in the performance when detecting viremic infections were observed between this one-step testing strategy vs. the conventional two-step algorithm involving venepuncture. Overall HCV seroprevalence was 79.8%, and prevalence of viremic infection was 58.5%. Importantly, 35.8% of viremic HCV participants were unaware of their status, and no specific socio-demographic or bio-behavioral factors independently associated with unawareness of viremic infection were identified. Among participants reporting a past or current HCV infection, 29.0% stated having received HCV antiviral treatment.

CONCLUSION

The high viremic HCV infection burden among PWID attending HRS, estimated for the first time in Catalonia, together with the low levels of awareness of viremic status and access to treatment, suggest that scaling up this one-step screening and diagnosis strategy to the network of harm-reduction services would help to achieve HCV elimination targets set by the World Health Organization.

Elimination of hepatitis C. Positioning document of the Spanish Association for the Study of the Liver (AEEH)

The Spanish Association for the Study of the Liver (AEEH) is convinced that the elimination of hepatitisC virus (HCV) in Spain is possible as long as we are able to use the resources and tools necessary for it. This document reflects the position of the AEEH regarding the elimination of HCV, establishing a wide range of recommendations that can be grouped into five categories: 1)Screening of HCV according to age, of the existence of classic acquisition risk factors of infection, active search of previously diagnosed patients and development of micro-elimination strategies in vulnerable populations; 2)Simplification of HCV diagnosis (one-step diagnosis and diagnosis at the point of patient care); 3)Simplification of patient treatment and improvement of care circuits; 4)Health policy measures, and, finally, 5)Establishment of HCV elimination indicators.