Ontario saw 700 new cases Monday but the province's top doctor admits that 36% of them could be false positives. That and other context needed as most media only focus on case numbers. Read & RT #onpoli #COVID19Ontariohttps://torontosun.com/opinion/columnists/lilley-big-covid-numbers-need-context …
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Replying to @brianlilley
Uh, I feel like
@deonandan needs to weigh in here15 replies 1 retweet 17 likes -
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I'd agree with that. For the past few weeks in Ontario that has not been the case. Some assessment centres say that as many as 70% of people presenting for testing had no symptoms. Thus my question to Dr. Williams. Comments have been made about false + as recently as last week.
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I think the testing from ONS England gives some perspective here - 220,000 tests and 159 positives means that in the sample the maximum false positive rate (or 1-specificity) is 0.07%
2 replies 0 retweets 2 likes
Now, unfortunately I'm not up to speed on Canada specifically, but if the labs are using the same test and procedures, you'd expect there to be very few false positives in the numbers
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