The US examined the improper individuals for coronavirus

And you’ll inform due to a quantity referred to as the check positivity fee.

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As the speed of latest coronavirus circumstances within the US slows down, many states and cities there are encouraging companies to open once more, easing the lockdowns which have been in place since March. However public well being specialists warn that in a lot of these locations, opening up is untimely.

The reason being that all through the US, in addition to in lots of different nations, we nonetheless don’t actually know the way many individuals have the virus, or the place they’re. That’s harmful as a result of it means contaminated individuals who don’t really feel sick are most likely mingling with the remainder of the inhabitants, which might allow additional outbreaks. And the one technique to actually forestall that’s by proactively testing individuals for covid-19 till the individuals who have it have been tracked down and remoted.

The US began testing its inhabitants for covid-19 very slowly, however it’s since ramped testing up, and by early Might was performing over 200,000 checks a day. Sadly, there’s no magic variety of checks that’s “sufficient” to comprise an outbreak. The necessary factor is to check the proper individuals — and to guage whether or not that’s taking place, public well being officers advocate a distinct quantity: The proportion of checks coming again constructive. It’s referred to as the check positivity fee.

Be aware: The headline on this piece has been up to date.
Earlier headline: What the US must do to open up safely

Sources:

Our World in Information is a dependable supply for country-by-country covid-19 knowledge:
https://ourworldindata.org/coronavirus-data-explorer?yScale=log&zoomToSelection=true&deathsMetric=true&dailyFreq=true&aligned=true&smoothing=7&nation=USA+GBR+CAN+BRA+AUS+IND+ESP+DEU+FRA+RUS

Our World in Information additionally has weekly-rolling test-positivity fee knowledge which provides a greater snapshot of the place nations are at present at:
https://ourworldindata.org/coronavirus-testing

We primarily based our state test-positivity charges on this Might 6 Harvard International Well being Institute and NPR evaluation:
https://www.npr.org/sections/health-shots/2020/05/07/851610771/u-s-coronavirus-testing-still-falls-short-hows-your-state-doing

The Atlantic’s protection of the significance of test-positivity charges:
https://www.theatlantic.com/expertise/archive/2020/04/us-coronavirus-outbreak-out-control-test-positivity-rate/610132/

An necessary disclaimer on potential inflation in testing numbers on the nationwide and state stage within the US:
https://www.theatlantic.com/well being/archive/2020/05/cdc-and-states-are-misreporting-covid-19-test-data-pennsylvania-georgia-texas/611935/

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