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California Covid 19 epidemic is coming to an end and California is the last state in the lower 48 states to do socketAccept(

The Covid 19 epidemic is basically over for the USA.

A 40% susceptible is used to build the SIR models.

Using the Smith/Dietz Herd Immunity Threshold formula where herd immunity is derived from R():

HI = 1- (1/R())

The “forward R()” is derived, that level of R() which will not increase the epidemic given the current percentage of the populace infected.