Sofia 2 is Quidel’s next-generation version of its best-selling Sofia instrumented system. Sofia 2 utilizes the original Sofia’s fluorescent chemistry design while improving upon the graphical user interface and optics system to provide an accurate, automated and objective result in as few as 3 minutes. Sofia 2 also integrates wireless connectivity and its barcode scanner within a smaller footprint than the legacy Sofia instrument. The next-generation Sofia system also comes connected to Virena®, Quidel’s data management system, which provides aggregated, de-identified testing data in near real-time.
Lyme disease is the most common tickborne disease in North America and Europe1. In the United States, Lyme disease is caused by the bacterium, Borrelia burgdorferi, transmitted through the bite of an infected blacklegged tick. (1, 2)
Patients infected with B. burgdorferi may experience symptoms associated with three stages: early localized disease, early disseminated disease, and late persistent disease1. The most characteristic symptom of early localized disease is the appearance of erythema migrans (EM) on the skin1,3. EM may also be accompanied by flu-like symptoms days or weeks after infection3. In the second stage, early disseminated disease, untreated patients may begin to see neurological and rheumatological manifestations, and less commonly, dermatological, cardiac, or ophthalmological manifestations. These symptoms generally appear weeks to months after infection1. If the disease continues to be left untreated, late persistent disease may also follow months or years later with continued progression of manifestations in the joints, heart, skin, and nervous system. (2, 3)
Early detection and treatment of Lyme disease can help resolve symptoms and prevent progression of the disease1. The primary means of identifying B. burgdorferi infection is detection of the body’s IgM and IgG antibody response by way of immunoassay3. Detection of IgM antibodies to B. burgdorferi is generally most significant in the earlier stages of the disease. Conversely, detection of IgG antibodies has proven to be significant for longer periods, as the antibodies may remain detectable years after infection.
"The Sofia Lyme Assay’s 510(k) clearance for use on the Sofia 2 instrument will allow healthcare workers to generate a faster result, thereby accelerating the diagnosis and potential treatment of Lyme Disease for the patient. This is another example of our ability to provide simple, cost-effective solutions for physician offices and hospitals that previously had to wait several days for send-out Lyme results,” said Douglas Bryant, president and chief executive officer of Quidel Corporation.
"We expect that this new product introduction will increase the utilization of our Sofia 2 platform, and could create incremental instrument placement opportunities in the near to medium term.”
The Sofia Lyme Assay was previously 510(k) cleared for use on the Sofia instrument. This new 510(k) clearance allows the assay to also be run on the Sofia 2 instrument. The Sofia Lyme Assay is the fourth 510(k) cleared Sofia test for use on the Sofia 2 system: the Sofia Influenza A+B Assay, the Sofia RSV Assay, and the Sofia Strep A+ Assay were 510(k) cleared and CLIA waived by the FDA in 2017.
1. Wormser, G. P., Dattwyler, R. J., Shapiro, E. D., Halperin, J. J., Steere, A. C., Klempner, M. S., Nadelman, R. B. (2006). The Clinical Assessment, Treatment, and Prevention of Lyme Disease, Human Granulocytic Anaplasmosis, and Babesiosis: Clinical Practice Guidelines by the Infectious Diseases Society of America. Clinical Infectious Diseases, 43(9), 1089-1134.
2. CDC. http://www.cdc.gov/lyme/diagnosistesting/LabTest/TwoStep/index
3. Aguero-Rosenfeld, M. E., Wang, G., Schwartz, I., & Wormser, G. P. (2005). Diagnosis of Lyme Borreliosis. Clinical Microbiology Reviews, 18(3), 484-509.