From: here@is.invalid   
      
    Photonic technology enables fast, sensitive saliva test for COVID-19   
      
   Portable, low-cost instrument for virus detection combines   
   fluorescence reader and microfluidic chip   
   ...   
   ...   
   "Our instrument, which requires just a few drops of saliva, would be   
   useful for mass screening in settings such as restaurants, schools,   
   offices, theatres and cinemas," said researcher Alfredo Ongaro from   
   ICFO. "What's more, the technology can be easily adapted to detect   
   markers for other pathogens, including those that may be involved in   
   future outbreaks."   
      
   In the Optica Publishing Group journal Biomedical Optics Express, the   
   researchers report that the system correctly detected 91.2% of   
   COVID-19 positive cases and 90% of negative cases in tests of more   
   than 50 previously frozen saliva samples. The test can measure very   
   small quantities of virus like PCR tests but is as fast as rapid   
   antigen tests.   
      
   https://www.eurekalert.org/news-releases/944274   
      
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