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Disease prevention and treatment

All what it means by positivity rate.

If the percent positive was more than 50% in an area, doctors would have to do only two tests to find one case. If an area's percent positivity rate is below 1%, you would have to do over 100 tests to find one case.

"If you were looking in a creek for crayfish, you find them by picking up rocks, You don't have to turn over a lot of rocks to find them if the rate is high."

What does a percent positive not tell you?

When the percent positive rate in your area is 58%, that does not mean that 58% of the population has Covid-19. It mostly means that 58% of the population who got a test actually had Covid-19.

Not everyone who has Covid-19 gets a test.

"With the positivity rate, the denominator is always the total number of tests performed, and the numerator is the number of tests that turn positive, but the catch occurs is how to interpret that number," said the chair of the American Board of Internal Medicine's infectious disease board. "The number of tests performed could be on the same person, for example, so each number may not represent a different person

The number of actual cases in your area is likely higher than that percent positive number, but the number is one measure public health leaders can use to gauge how much disease is in the area and determine if they need to take further action to slow the spread.

There is no uniform percent positive number at which things shut down.

In Nairobi for instance, if the percent positive number goes above 3%, schools go to remote learning.

"Either way the percent positive becomes a very important number to watch with schools. It can change a lot of lives," said an author" ,who has written several books about infectious disease.

Why should I care about the percent positivity rate

"With the weather, if it is a light rain, you'd put on a raincoat, right? If the number of cases is low in your area, wear a mask and you are probably going to be OK,"

"If it's at 10 or 15%, think of it like a heavy rain or thunderstorm. You need to be even more careful. Start limiting your activities,". "If the rate gets higher than that, think of it like a tornado. With a tornado you'd get in the basement and make sure your kids are safe."

How should the percent-positive rate figure into my decisions?

When the Covid-19 percent-positive rate is high in your area, the chance that you will run into someone with the virus at the grocery store, for example, is much higher than if the rate is low in your area.

The percent-positive rate should be one factor in deciding if you should go out.

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Content created and supplied by: gykevin (via Opera News )

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