I was looking at the data I've accumulated on coronavirus cases in Victoria and decided to crosscheck two series of data. The cases each day in Victoria and the number of tests taken each day in Victoria. As it turns out, there was a very interesting pattern that reveals some useful information.
The following is a graph of the daily cases in Victoria.
The following is a graph of the number of daily tests in Victoria. Prior to the 3rd of August the number of tests were estimates, whereas since the 3rd it appears these numbers are been automated and are now far more accurate.
What was interesting was a very obvious double spike and large dip in the number of tests on the 9th, 10th and 11th of August. Due to the significant number of daily tests (that were nearly double the usual number of tests), interestingly the results could be seen three days later in the number of reported cases.
We can now quite easily see the relationship between when the tests were done and when the test results were known. Keep in mind the data is reported the next day.
We can see it takes roughly three days from when tests are done to when the number of cases is reported to the government. Although it is not known if the test result is reported to the person at the same time, or whether that might take another day or two.
Kelvin Eldridge
Victorian coronavirus outbreaks
Victorian coronavirus cases by postcode
Victorian coronavirus public exposure locations
5km Radius map
NOTE: If you click on the graphs you'll be able to see the detail better.
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