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Sensitivity of Measles rRT-PCR Testing During an Outbreak in Persons without Rash
Kimberly Gressick1,2, Stephanie Gretsch2, Thomas D Filardo3
1Epidemic Intelligence Service, CDC, Atlanta, GA, USA.
None:
During the 2024 Chicago measles outbreak, 120 real-time reverse-transcription polymerase chain reaction (rRT-PCR) tests were performed on 117 symptomatic persons with measles exposure, but without rash; test sensitivity was 78% (7 true positive). After an initial negative test, providers should maintain suspicion of measles and repeat testing as symptoms progress.
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