face mask

California backtracked on barring students who don’t wear masks from school campuses, instead leaving it up to local K-12 officials to decide how to handle students who don’t comply with the mask mandate at schools in the fall.  State…

NEW YORK (AP) — Vaccinated teachers and students don’t need to wear masks inside school buildings, the Centers for Disease Control and Prevention said Friday in relaxing its COVID-19 guidelines. The changes come amid a national vaccination…

. "We've demonstrated that we can freeze-dry a broad range of synthetic biology sensors to detect viral or bacterial nucleic acids, as well as toxic chemicals, including nerve toxins. We envision that this platform could enable…

COVID-19 virus transmission is mainly thorough aerosols, which are tiny particles of water or other matter that can remain suspended in air for long periods of time and are small enough to penetrate the respiratory system.A study led by…

The ConversationMay 14, 2021 12:31:18 ISTThe average person knows about 5,000 faces – from family and friends to the cashier at the local store. Most people can recognise familiar faces with ease, even from low-quality images, or from…