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A comment on How the coronavirus is driving new surveillance programs globally. Parent comment

Re:How the coronavirus is driving new surveillance programs ... by samoa42 on Friday April 17, 2020 @03:11PM (#22901985)
do you understand that exponential curves stem from unbound models?

sigmoids tend to reflect nature more realistically.

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Re:How the coronavirus is driving new surveillance programs ... by Tainnor on Saturday April 18, 2020 @07:52AM (#22907071)
of course, no growth is truly exponential forever, but a sigmoid model is still basically exponential in its initial stage and as long as there is no big saturation factor (i.e. lots of herd immunity), the limiting factor is negligible.

so, as long as herd immunity is not high, the curve is approximately exponential.

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