However, they explicitly use a conservative specificity of 99.1%. StaySafe’s experience with Panbio was consistent with the licensed specificity of 99.8%. I suspect using that number would result in guidance with a much lower threshold (perhaps 75 cases per M instead of 250). 2/

That’s to say: If we use a realistic instead of conservative specificity estimate, then the advice would likely be that most Ontarians should be screening with rapid tests 2 - 3 times per week at today’s case loads!