Dive Brief: In what could have major ramifications for workers in a host of industries including construction, researchers at the University of California San Diego are developing a color-changing test strip that can be stuck on a mask and used to detect COVID-19 in a user’s breath or saliva. The project, which received $1.3 million from the National Institutes of Health, is aimed at providing simple, affordable and reliable surveillance for COVID-19 infections that can be done daily and easily implemented in resource-poor settings such as constrution sites, according to a news release. The test strips, or stickers, will be designed to adhere to any type of mask, and will detect the presence of protein-cleaving molecules, called proteases, that are produced from infection with the SARS-CoV-2 virus.