The U.S. Food and Drug Administration (FDA) has announced it has cleared for marketing the first rapid blood test for the drug-resistant staph bacterium known as MRSA (methicillin-resistant Staphylococcus aureus), which can cause potentially deadly infections.
Methicillin is an antibiotic that has been used successfully to treat infections from the Staphylococcus aureus bacterium. Over the years, the staph bacterium mutated and spawned MRSA, a strain of staph bacterium that is resistant to methicillin and which has a higher rate of being fatal.
The BD GeneOhm StaphSR Assay uses molecular methods to identify whether a blood sample contains genetic material from the MRSA bacterium or the more common, less dangerous staph bacterium that can still be treated with methicillin.
“The BD GeneOhm test is good news for the public health community. Rather than waiting more than two days for test results, health care personnel will be able to identify the source of a staph infection in only two hours, allowing for more effective diagnosis and treatment,” said Daniel G. Schultz, M.D., director, FDA's Center for Devices and Radiological Health.
Staph infections occur most frequently among persons in hospitals and health care facilities (such as nursing homes and dialysis centers) who have weakened immune systems. Both types of bacteria also can infect healthy people.
Distinguishing between the two sources of infection is critical to successful treatment.
The more common, less dangerous strain of staph results in infections that are generally mild and affect the skin with pimples or boils that can be swollen, painful and drain pus.