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Cases have been doubling about every 3 days in the US for a month

That's basically the definition of exponential.

Obviously, that kind of growth rate is unsustainable because in the US that would imply 100,000,000 million infections by end of April, and a week after that, more people would be infected in the US than actually exist, so we should see a bend in the curve very soon.

Basically anything with an R0 of >1 is exponential. Covid19 has been exponentially spreading worldwide for 3 months.

The real curve is sigmoidal (S-shaped). The first half of that is exponential which is what we've been seeing since it started.

(In response to this post by GreensboroHokie)

Posted: 03/30/2020 at 12:52PM

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The latest buzz word: exponential -- GreensboroHokie 03/30/2020 12:01PM

X squared. ** -- MikeVT85 03/30/2020 8:43PM

To be fair, models us R zero of 3 for c19. Generation time of 5d. What yo -- ColoVT82 03/30/2020 4:50PM

Cases have been doubling about every 3 days in the US for a month -- bulab 03/30/2020 12:52PM

Doubling every 3 days is a steep line, but not exponential -- GreensboroHokie 03/31/2020 4:33PM

Doubling at same interval is not a straight line ** -- bulab 03/31/2020 5:31PM

The problem is that has more to do with testing rates than infection rates -- Vienna_Hokie 03/30/2020 1:33PM

You would think this is a fairly simple concept. Look at deaths -- LaneRat 03/30/2020 1:56PM

By my math, projected 200,000 U.S. deaths would be about 60 per 100K -- uwhokie 03/30/2020 4:45PM

Deaths are outcome, key to saving lives is effective medical intervention -- Vienna_Hokie 03/30/2020 2:14PM

Exponential has certainly become as misused as “literally” or GOAT. ** -- PhotoHokieNC 03/30/2020 12:47PM

Or “decimated”. ** -- PhotoHokieNC 03/30/2020 12:49PM

Dude, that is a math term. Americans generally are not good at Math. -- vt_mughal 03/30/2020 12:44PM

As in pEmdas? ** -- Gadfly 03/30/2020 12:42PM

Social networks have exponential growth in membership ** -- lchoro 03/30/2020 12:26PM

The data for NC I found looks exponential up until Friday -- jmanatVT 03/30/2020 12:22PM

Tend to agree. Optimistically, it makes me thing social distancing is -- BG Hokie 03/30/2020 12:04PM

We are pretty much caught up on backlog. And if infection rate is as -- Concord Dan 03/30/2020 12:20PM

Caught up on the testing backlog but there is still a huge results backlog. ** -- RoswellGAHokie 03/30/2020 1:57PM