That means more than two-thirds of the prison’s population has been infected, said Dr. George Rutherford, epidemiologist and infectious diseases expert at UC San Francisco.

And though new cases have slowed, they are still occurring — with 60 reported in the last two weeks — suggesting herd immunity has not yet been achieved.

San Quentin’s death toll translates to a mortality rate of about 767 people dying out of every 100,000 persons.

If that same rate occurred across California, that would translate to a staggering 300,000 deaths statewide — many times larger than California’s cumulative death toll of more than 10,400. Nationally, that would be equivalent to 2.5 million deaths; the current cumulative U.S. death toll is more than 163,000.