Risk of transmission outside is low, I'm not aware of any cases traced to interaction in outside spaces. Polo is re-opening at 20% capacity.
There is an exposure dosage aspect to COVID risk that seems to factored by time (+15 min)? in interior spaces. CDC finally recognized the spread by aerosols in recirculated interior air. Recommendation is at least 6 fresh air exchanges per hour for interior air to be safe.
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