Worried—We are now seeing lots of outdoor-only #DeltaVariant transmission between strangers with no direct contact. These sports attendees weren’t even sitting together—likely fleeting transmission at “pinch points” (bottlenecks) at stadium🏟 gates. This would change everything. https://t.co/tLnxb58N5P

— Eric Feigl-Ding (@DrEricDing) July 19, 2021