New reagent-free SARS-CoV-2 detection technique based on machine learning and Raman spectroscopy

The novel coronavirus, or SARS-CoV-2, which causes the highly contagious COVID-19, has infected millions of people worldwide. The global spread of this deadly pandemic has triggered widespread research on infection control. However, controlling the spread of COVID-19 is challenging for many reasons.

Some patients show a variety of nonspecific symptoms ranging from headaches to a…