A new DNA sensor can detect viruses and tell if they are infectious or not in minutes, according to a report published in Science Advances.The sensor was developed by using DNA technology and does not require the need to pretreat test samples. Researchers demonstrated this technique with the human adenovirus and SARS-CoV-2. e new sensor method can produce results in 30 minutes to 2 hours. Because it requires no treatment of the sample, it can be used on viruses that will not grow in the lab.The sensing technique could be applied to other viruses, the researchers said, by tweaking the DNA to target diff erent pathogens.