I'm not sure what positivity rate has to do with AZ blood clot potential.
Applying the positivity rate to the bus is likely wrong. Ontario has had rules for quite a while that only people that have symptoms, had high-risk contact, directed by public health (normally for reasons above) or visiting ltc can get tested.
To figure out global positivity rate you need to test a random sample of the population. It should be a much lower rate as you didnt screen for high risk prior to allowing a test. That would also pick up asymptomatic cases which are unlikely to be caught now.
GG asked how many people actually knew someone who had tested positive. My personal knowledge was two but one of the things fueling the anti mask / distance / vaccine movement is that there would have been a large number of people I passed on the street that were positive but invisibly so. It isn't like leprosy where if someone's nose is rotting off you don't shake their hand.
Too many people are minimalist on fighting this thing because the death toll isn't high enough to hit them where they live. A 13 year old in Brampton died. So what, if it wasn't your 13 year old. The further you are from a problem the less significant the care.
Obviously a hot spot will have higher percentages and wise people in low rate areas would enact measures that prevent rate increases. Some of that would already be in place by nature of a single family dwelling instead of a 400 unit apartment tower in a low income area (Need to work, can't from home) with minimum elevator service.
Personally I wouldn't use public transit. I don't know the numbers, don't have full vaccine, don't have a guaranteed bed in ICU. Would posting public transit rates make a difference? They're an average anyways.
Nothing personal but I would specifically avoid close proximity to transit workers, teachers, factory workers and others forced into high contact jobs.
The blood clot issue is so blown out of proportion. A book could be written on the stupidity, AZ vs lottery win, lightning strike, airplane travel, football injury etc.
Media is screwing this thing up by posting half truths. The 7% is in targeted areas not the general public
I wonder how bad a problem has to become to get people to alter their activities.
Some people give up riding because of a no injury close call. Others survive serious collisions and get back in the saddle. The risk assessment with Covid is different in that you also have to calculate the risk factor to others you might affect beyond the condolences factor.