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What is the positivity rate in north carolina - what is the positivity rate in north carolinaNorth Carolina COVID Information | NC COVID.
This chart is officially out of date as more than 30 states across the US have stopped reporting testing positivity or significantly scaled down their testing reports. The CRC data visualizations will remain available for past dates and reports, but will no longer have up to date information on testing positivity and criteria.
This initiative relies upon publicly available data from multiple sources. States are not consistent in how and when they release and update their data, and some may even retroactively change the numbers they report.
This can affect the percentages you see presented in these data visualizations. We are taking steps to account for these irregularities in how we present the information, but it is important to understand the full context behind these data.
When states report the number of COVID tests performed, this should include the number of viral tests performed and the number of patients for which these tests were performed. Currently, states may not be distinguishing overall tests administered from the number of individuals who have been tested.
This is an important limitation to the data that is available to track testing in the U. When states report testing numbers for COVID infection, they should not include serology or antibody tests.
Antibody tests are not used to diagnose active COVID infection and they do not provide insights into the number of cases of COVID diagnosed or whether viral testing is sufficient to find infections that are occurring within each state. States that include serology tests within their overall COVID testing numbers are misrepresenting their testing capacity and the extent to which they are working to identify COVID infections within their communities.
States that wish to track the number of serology tests being performed should report those numbers separately from viral tests performed to diagnose COVID Learn more about why the positivity rates shown on our site may differ from state calculations. If a positivity rate is too high, that may indicate that the state is only testing the sickest patients who seek medical attention, and is not casting a wide enough net to know how much of the virus is spreading within its communities.
A low rate of positivity in testing data can be seen as a sign that a state has sufficient testing capacity for the size of their outbreak and is testing enough of its population to make informed decisions about reopening.
Which U. Click here to learn more about why the positivity rates shown on our site may differ from state calculations. Some states may be calculating the positivity percentage for each day, and then doing the rolling 7-day average.
We use our approach because testing capacity issues and uneven reporting cadences create many misleading peaks and valleys in the data.
Since we want to give a 7-day average, it is fairer to average the raw data and then calculate the ratios. Otherwise, days when a large number of negative tests are released at once—resulting in very low positivity—will have the same weight as days when data was steadily released, and the overall result is going to be lower.
Our approach is applied to all our testing data to correct for the release of uneven data. Testing Hub Which U. Data Source:. How we calculate positivity. Click here to learn more about why the positivity rates shown on our site may differ from state calculations 7-Day Averages: The CRC calculates the rolling 7-day average separately for each daily numerator and denominator data point, and then for each day calculates the percentage over the rolling averages.
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