Let's look at #Ontario's #testing strategy in comparison to countries lauded for best managing #COVID19 (Taiwan, South Korea, Japan, New Zealand). Orange lines are tests, blue lines are cases. We can see, as cases rise, so does testing. When cases come down, tests follow. 1/3 
This makes sense. When infections are rising, more people are getting infected & more people are contacts of cases. So more need to be tested. Labs have spare capacity to absorb. Now let's look at Ontario. As cases came down in May/June, tests paradoxically rose & stayed up. 2/3
Today, we see a spike in cases, & predictably, tests are rising. Unlike our better-performing peers, we didn't save capacity for this rainy day. So now test results are slow & line-ups are long. But it isn't too late. We have data on which testing is wasteful. Let's fix this! 3/3
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