This filter for the front of an N95 mask could make it reusable

Scientists came up with an experimental virus-blocking membrane that can be discarded so doctors can use the mask again. As governments around the world struggle to build up a supply of N95 masks for healthcare workers—navigating price gouging, counterfeit respirators, scammers, and fierce competition from other governments—some hospitals are still taking care of COVID-19 patients without adequate supplies, and reusing masks that were designed to be disposable. Read Full Story
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