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Its accuracy is also a significant improvement over current rapid antigen tests that the U.S. The device closely matches the accuracy of the gold-standard PCR-based tests but with nearly instantaneous results instead of results that take several days to receive. "Here, we demonstrated a credible technique which combines PCR-like genetic coding and optics on a chip for accurate virus detection directly from blood." "The sensitive optical sensor, along with the rapid fabrication approach used in this work, promises the translation of this promising technology to any virus detection including COVID-19 and its mutations with high degree of specificity and accuracy," Chanda says. However, the technology can easily be adapted to detect other viruses, like the COVID-19 virus, says study co-author Debashis Chanda, a professor in UCF's NanoScience Technology Center. The researchers tested the device using samples of Dengue virus, a mosquito transmitted pathogen that causes Dengue fever and is a threat to people in the tropics.
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The results are detailed in a new study in the journal Nano Letters. Testing for viruses is important for early treatment and to help stop their spread. Researchers say the device can tell with 95 percent accuracy if someone has a virus, a significant improvement over current rapid tests that experts warn could have low accuracy. The optical sensor uses nanotechnology to accurately identify viruses in seconds from blood samples.