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BD Diagnostics MRSA Assay Receives FDA Clearance

Published: Tuesday, January 14, 2014
Last Updated: Tuesday, January 14, 2014
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Company receives FDA clearance to market the BD MAX™ MRSA XT Assay for use on the fully-automated BD MAX™ System.

This is the second assay from BD Diagnostics capable of detecting newly emerging MRSA strains with the novel mecC gene. Launched in 2013, the  BD MAX™ StaphSR Assay reports results for both Staphylococus aureus (SA) and methicillin-resistantStaphylococus aureus (MRSA) and was the first commercially available assay in the U.S. to detect mecCstrains of MRSA. Both assays use eXTended Detection Technology to identify a broad range of SA strains includingmecA and mecC dropout mutants and new strains of MRSA that may not be detected by other assays.

“Assay design is critical to detect MRSA accurately and ensure appropriate infection control interventions are applied,” said Dr. Patrick Murray, Worldwide Director of Scientific Affairs, BD Diagnostics – Diagnostic Systems. “The BD MAX MRSA XT Assay helps improve patient safety by providing hospitals with a new solution to detect the latest strains of this drug-resistant superbug.”

Molecular assays for MRSA are used in active surveillance programs to identify colonized patients rapidly. Active surveillance is a proven strategy to reduce transmission in healthcare settings and helps prevent infection in vulnerable patients.[i] Inaccurate detection may contribute to uncontrolled transmission of MRSA and inappropriate use of healthcare resources.With many commercial assays, SA strains carrying SCCmec where the mecA gene is absent (commonly called “dropout mutants”) may be incorrectly classified as MRSA. These false positive results can lead to unnecessary and expensive isolation and treatment of patients.[ii] MRSA strains with the newly emergingmecC gene account for nearly three percent of all new MRSA cases[iii] in some communities but cannot be detected by all assays.[iv] These false negative results can lead to uncontrolled transmission of undetected strains of MRSA.[v]

As a pioneer in healthcare-associated infections (HAIs), BD has the insights and expertise to provide hospitals innovative solutions that can improve patient care. The BD MAX MRSA XT Assay is the latest milestone demonstrating BD’s commitment to providing advanced assays to detect and prevent HAIs. Other HAI assays available on the BD MAX System include BD MAX™ Cdiff for the detection of toxigenic Clostridium difficileDNA, and BD MAX StaphSR. BD MAX™ HAI Solutions combine efficiency through system automation with the flexibility to perform multiple HAI assays in the same run, allowing hospital laboratories to customize testing in response to current and future challenges in the fight against HAIs.


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