A new device built by scientists at Washington University in St. Louis aims to provide real-time monitoring of indoor spaces and detecting any traces of the COVID virus in the air in just five minutes.
. But a new device built by scientists at Washington University in St. Louis aims to help us manage that new future by providing real-time monitoring of indoor spaces and detecting any traces of the COVID virus in the air in just five minutes., is said by its makers to be relatively small and inexpensive to build. It also has the potential to be easily modified to monitor other kinds of aerosolized viruses, such as influenza and RSV.
Puthussery, Chakrabarty and their colleagues built the device based on designs for a previously built biosensor that is able to detect a protein commonly found in the brains of people with Alzheimer’s, helping to give early warning that someone may be at risk of developing symptoms of the disease. When the pandemic got underway, the team began to believe it may be possible to use the same design to detect airborne SARS-CoV-2, the virus that causes COVID infection.
The sample then pumps the fluid into the biosensing component of the detector, where the virus’ spike proteins bond with the llama antibodies. If the virus is present, a light goes off to indicate the COVID virus is present nearby. Anyone who is present then has a heads up to leave the room, or mask up and increase ventilation in the area for a while.
Despite being just 10 inches tall and 1 foot in length, the device has a flow rate of about 1,000 liters per minute—which basically means it’s able to find any virus that’s present in a mid-sized room within just minutes, as opposed to the other systems that can take up to 24 hours. Lab experiments conducted in confined rooms showed the device has a detection sensitivity between 77 and 83 percent, across four major variants: Beta, Delta, Omicron, and Washington .
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