California has slightly shifted its color-coded tier system by adjusting its case rate metrics, making it easier for regions like Orange County to enter the least restrictive yellow tier in which coronavirus transmission is considered minimal.

Counties previously needed an adjusted case rate of fewer than 1 daily case per 100,000 residents to enter the yellow tier; the Orange County COVID-19 dashboard now shows that figure has inched up to fewer than 2 cases per 100,000 residents.

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The state’s move to ease yellow tier requirements could be related to the potential addition of a fifth green tier, which would allow fewer business restrictions once the county’s coronavirus transmission
improves enough.

Orange County is currently in the orange tier with a case rate of 3, up slightly from 2.8 last week.

The county has already met the required testing positivity rate to enter the yellow tier.