Citation: .Journal: PloS one.Published: 2019; ISSN: 1932-6203.Full author list: Basch P; Desale S; Fernandez SJ; Fishbein DA; Geboy AG; Nichols WL.UI/PMID: 31120906.Subject(s): *Databases, Factual | *Delivery of Health Care, Integrated | *Electronic Health Records | *Hepatitis C | *Hepatitis C Antibodies/bl [Blood] | *Primary Health Care | *RNA, Viral/bl [Blood] | Aged | Female | Hepatitis C/bl [Blood] | Hepatitis C/ep [Epidemiology] | Hepatitis C/pc [Prevention & Control] | Humans | Male | Maryland/ep [Epidemiology] | Middle Aged | Retrospective Studies | Risk Factors | Virginia/ep [Epidemiology]Institution(s): MedStar Health Research Institute | MedStar Heart & Vascular Institute | MedStar Institute for Quality and Safety | MedStar Washington Hospital CenterDepartment(s): Medicine/Infectious DiseasesActivity type: Journal Article.Medline article type(s): Journal ArticleOnline resources: Click here to access onlineDigital Object Identifier: https://dx.doi.org/10.1371/journal.pone.0216459 (Click here)ORCID: Fernandez, Stephen J http://orcid.org/0000-0002-5112-1844Geboy, Alexander G http://orcid.org/0000-0003-3641-8911 (Click here) | (Click here)Abbreviated citation: .Abstract: Highly efficacious and tolerable treatments that cure hepatitis C viral (HCV) infection exist today, increasing the feasibility of disease elimination. However, large healthcare systems may not be fully prepared for supporting recommended actions due to knowledge gaps, inadequate infrastructure and uninformed policy direction. Additionally, the HCV cascade of care is complex, with many embedded barriers, and a significant number of patients do not progress through the cascade and are thus not cured. The aim of this retrospective cohort study was to evaluate a large healthcare system's HCV screening rates, linkage to care efficiency, and provider testing preferences. Patients born during 1945-1965, not previously HCV positive or tested from within the Electronic Health Record (EHR), were identified given that three-quarters of HCV-infected persons in the United States are from this Birth Cohort (BC). In building this HCV testing EHR prompt, non-Birth Cohort patients were excluded as HCV-specific risk factors identifying this population were not usually captured in searchable, structured data fields. Once completed, the BC prompt was released to primary care locations. From July 2015 through December 2016, 11.5% of eligible patients (n = 9,304/80,556) were HCV antibody tested (anti-HCV), 3.8% (353/9,304) anti-HCV positive, 98.1% (n = 311/317) HCV RNA tested, 59.8% (n = 186/311) HCV RNA positive, 86.6% (161/186) referred and 76.4% (n = 123/161) seen by a specialist, and 34.1% (n = 42/123) cured of their HCV. Results from the middle stages of the cascade in this large healthcare system are encouraging; however, entry into the cascade-HCV testing-was performed for only 11% of the birth cohort, and the endpoint-HCV cure-accounted for only 22% of all infected. Action is needed to align current practice with recommendations for HCV testing and treatment given that these are significant barriers toward elimination.