No-Lockdown Uruguay is the blue spot on the red continent below. Positivity Rate is 0,7%; neighboring countries surpass 50%. Plausible?

Uruguay´s success story: They invented their own PCR test. With their own primers, and a Ct value <35. For comparison, CDCs PCR uses Ct <40.

We should not compare countries without knowing the "market share" of the test they use. And we have to compare the tests (test-test-reliabilty).

Here is a paper about uruguay´s special response: https://www.medrxiv.org/content/10.1101/2020.07.24.20161802v1

Sensitivity and Specifity of the different PCR test are not only defined by different Ct values, but also different primers and gene loci make a big difference.

And another issue is contamination... https://twitter.com/FrankfurtZack/status/1299762933073838082?s=19