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Pseudo-Outbreak of Adenovirus Infection in a Neonatal Intensive Care Unit Due to a False-Positive Antigen Detection Test

ABSTRACT Twenty-eight of 56 infants in a neonatal intensive care unit had stools positive for adenovirus by the Sure-Vue adenovirus test. Virus cultures of conventionally processed and chloroform-extracted stool samples, as well as conventional and real-time PCR tests, were negative for adenovirus. The cause for the 50% false-positive rate with the antigen test was not determined.