The Centers for Disease Control announced Fairfield County has now been upgraded to a high transmission category for COVID-19.
Fairfield is the fifth county in the state to be upgraded to the high transmission category.
New Haven, Hartford, New London, and Middlesex counties also are listed as high transmission, and the other three Connecticut counties are still classified by the CDC as being in the "substantial transmission” category.
The high transmission category is the most severe as defined by the CDC with 100 or more cases per 100,000 people or a positivity rate of 10% or higher over the past seven days.