Vox: Lockdowns work against coronavirus. But they take a few weeks to show they’re working.
Reading Time: 6 minutes The thing we’re trying to reduce — new coronavirus infections — is invisible at first. It takes between 2 and 14 days for a newly infected person to start showing symptoms. After symptoms begin to show, it can take more than a week for them to be eligible for testing (many people are not eligible at all). And then, thanks to backlogs in testing availability, it can take days for them to learn they tested positive.
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