Novak Djokovic: Doubts over timing of Covid test

Jake Horton is on the reality check.

Novak DjokovicImage source, Getty Images

There are doubts about the timing of the positive Covid test that Novak Djokovic used to take.

It was given to him so he wouldn't have to follow rules barring unvaccinated people.

The serial number on his test on December 16th appears to be out of sequence with a sample of tests from Serbia.

His second test result was negative, but it was higher than this one.

His visa application was 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780 800-313-5780

His lawyers submitted documents to the federal court in Australia that included two Covid test certificates, one positive and one negative.

Djokovic tests

The earlier test had a higher confirmation code than the later one, according to a German research group.

They collaborated with the German news site, Der Spiegel, to report on Novak Djokovic's time-travelling tests.

The acting director of Serbia's official health body was included in the documents submitted to the federal court in Australia.

The Institute of Public Health of Serbia gave Mr Djokovic his results after he was tested in Serbia.

The test results have a unique confirmation code.

We wanted to know if these numbers are generated in chronological order in a single national database at the time of processing.

The earlier test had a higher serial number.

We collected data from as many Serbian test certificates as possible to plot the confirmation codes on a timeline.

Serbian test codes over time

The confirmation code on the test certificate is represented by a dot on the graph.

The Institute of Public Health issued 21 of them.

A further 35 were obtained from Milovan Suvakov, a Serbian research scientist based in the US.

He sent us the PDF files for the results.

The confirmation codes in all of the cases were the same as the initial ones sent by our colleagues, and showed that the earlier the test result date, the lower the confirmation code.

The only one of the confirmation codes we have plotted is Mr. Djokovic's positive test on December 16.

We have tests from both the days and the weeks of December.

Confirmation numbers increase chronologically.

If you take the confirmation code for the positive test on December 16th, it matches the test code results we have for 25 December and 28 December.

This would suggest a test between the two later dates.

DjokovicImage source, Getty Images
Image caption, Novak Djokovic was deported from Australia on "health and good order" grounds

We know that the two tests taken by Mr Djokovic were processed in different laboratories, and it is possible that these labs issued different batches of confirmation codes.

His first test has a higher code than his second.

We have two confirmation codes that were processed in the same lab as the positive test of Mr Djokovic. Both of them have lower confirmation codes.

There is nothing in the data to suggest that different labs have different batches of confirmation codes.

Djordje Krivokapic is a specialist in data and digital security.

There would be a simple explanation if that were the case.

We put our findings in this report to the Institute of Public Health of Serbia and the Office of Information Technology.

We have tried many times and have yet to get a response.

We contacted the team and invited them to explain the discrepancies, but haven't heard back from them.

Additional reporting by Daniele Palumbo.

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