Popular Science: “On February 25, the Centers for Disease Control and Prevention (CDC) updated its COVID-19 community spread level criteria and its mask guidelines. The changes have allowed 70 percent of Americans to go unmasked indoors, in theory. However, this does not apply to the vast majority of public transportation, even in areas where general indoor mask mandates are lifted. Except for public and private school transportation and open-air transport, masks are still required on all forms of public transportation, including taxis and ride-shares. This applies to all public transportation arriving in, traveling within, and leaving the United States (until it arrives at an international destination). It also requires masks in all indoor transportation hubs. People who are fully vaccinated are not exempt from any of these masking mandates.  “Traveling on public transportation increases a person’s risk of getting and spreading COVID-19 by bringing people in close contact with others, often for prolonged periods, and exposing them to frequently touched surfaces,” the CDC states on its website. “Wearing masks that completely cover the mouth and nose reduces the spread of COVID-19.” Here’s the latest rundown of CDC guidelines of when and where you need to mask up to while you travel…”