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- W1822713022 abstract "Background: In 2010, the incidence of hepatitis C virus (HCV) infection in the United States was estimated to be 17 000 cases annually, based on 850 acute HCV cases reported to the Centers for Disease Control and Prevention by local public health authorities. Absence of symptomatic disease and lack of a specific laboratory test for acute infection complicates diagnosis and surveillance. Objective: To validate estimates of the incidence of acute HCV infection by determining the reporting rate of clinical diagnoses of acute infection to the Massachusetts Department of Public Health (MDPH) and Centers for Disease Control and Prevention. Design: Case series and chart review. Setting: Two hospitals and the state correctional health care system in Massachusetts. Patients: 183 patients clinically diagnosed with acute HCV infection from 2001 to 2011 and participating in a research study. Measurements: Rate of electronic case reporting of acute HCV infection to the MDPH and rate of subsequent confirmation according to national case definitions. Results: 149 of 183 (81.4%) clinical cases of acute HCV infection were reported to the MDPH for surveillance classification. The MDPH investigated 43 of these reports as potential acute cases of HCV infection based on their surveillance requirements; ultimately, only 1 met the national case definition and was counted in nationwide statistics published by the Centers for Disease Control and Prevention. Discordance in clinical and surveillance classification was often related to missing clinical or laboratory data at the MDPH as well as restrictive definitions, including requirements for negative hepatitis A and B laboratory results. Limitation: Findings may not apply to other jurisdictions because of differences in resources for surveillance. Conclusion: Clinical diagnoses of acute HCV infection were grossly underascertained by formal surveillance reporting. Incomplete clinician reporting, problematic case definitions, limitations of diagnostic testing, and imperfect data capture remain major limitations to accurate case ascertainment despite automated electronic laboratory reporting. These findings may have implications for national estimates of the incidence of HCV infection. Primary Funding Source: National Institutes of Health." @default.
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- W1822713022 date "2015-08-18" @default.
- W1822713022 modified "2023-10-01" @default.
- W1822713022 title "Underascertainment of Acute Hepatitis C Virus Infections in the U.S. Surveillance System" @default.
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- W1822713022 doi "https://doi.org/10.7326/m14-2939" @default.
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