What is the COVID exposure risk from passing close by someone who is jogging relative to passing close by someone who is walking?
The reason I ask is with regard to going out for exercise, or to run errands: going out early in the morning means passing fewer people, but a larger percentage will be joggers. I'm trying to figure out whether there is an overall risk reduction, whether early morning is safer than the middle of the day.
I have only been able to find answers to adjacent questions:
'Either way, the risk is low outdoors versus indoors.'
Right. But what's the relative risk between these two low-risk outdoor events?
'Ideally, you should keep 4.5m separation from joggers.'
Ideally yes, but as it turns out, sidewalks are not 4.5m wide.
'We don't have enough data to be sure.'
Right. But decisions have to be made based on the best currently available guess. What's the best currently available guess for this? 1.1x? 2x? 5x? 20x?