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CDC Laboratory Recommendations for Syphilis Testing, United States, 2024
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02/08/2024
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Source: Recommendations and Reports / February 8, 2024 / 73(1);1–32
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Journal Article:Morbidity and Mortality Weekly Report (MMWR). Recommendations and Reports
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Description:This report provides new CDC recommendations for tests that can support a diagnosis of syphilis, including serologic testing and methods for the identification of the causative agent Treponema pallidum. These comprehensive recommendations are the first published by CDC on laboratory testing for syphilis, which has traditionally been based on serologic algorithms to detect a humoral immune response to T. pallidum. These tests can be divided into nontreponemal and treponemal tests depending on whether they detect antibodies that are broadly reactive to lipoidal antigens shared by both host and T. pallidum or antibodies specific to T. pallidum, respectively. Both types of tests must be used in conjunction to help distinguish between an untreated infection or a past infection that has been successfully treated. Newer serologic tests allow for laboratory automation but must be used in an algorithm, which also can involve older manual serologic tests. Direct detection of T. pallidum continues to evolve from microscopic examination of material from lesions for visualization of T. pallidum to molecular detection of the organism. Limited point-of-care tests for syphilis are available in the United States; increased availability of point-of-care tests that are sensitive and specific could facilitate expansion of screening programs and reduce the time from test result to treatment. These recommendations are intended for use by clinical laboratory directors, laboratory staff, clinicians, and disease control personnel who must choose among the multiple available testing methods, establish standard operating procedures for collecting and processing specimens, interpret test results for laboratory reporting, and counsel and treat patients. Future revisions to these recommendations will be based on new research or technologic advancements for syphilis clinical laboratory science.
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Content Notes:Introduction -- Methods -- Updating Syphilis Serologic Laboratory Terminology -- Principles for Syphilis Diagnosis -- Recommendations for Syphilis Testing in the United States -- Opportunities for Additional Research on the Laboratory Detection of T. pallidum Infections -- References.
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Pubmed ID:38319847
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Pubmed Central ID:PMC10849099
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Pages in Document:1-32
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Volume:73
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Issue:1
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Citation:Papp JR, Park IU, Fakile Y, Pereira L, Pillay A, Bolan GA. CDC Laboratory Recommendations for Syphilis Testing, United States, 2024. MMWR Recomm Rep 2024;73(No. RR-1):1–32. DOI: http://dx.doi.org/10.15585/mmwr.rr7301a1.
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