Columbiana County - April 28, 2021

Effective Reproduction Number (Rt)

Rt appears to have stayed below 1.0 for the past 6 weeks with a spike in mid April.

Projected Incidence

Case numbers are expected to decrease slightly in the coming 2 weeks, although considerable uncertainty exists.  Continued masking and social distancing will be critical to preventing large increases.

Asymptomatic to Symptomatic Ratio

The ratio of asymptomatic to symptomatic cases appears to have declined over the past two weeks after a spike above 1.0 in mid April.  A low ratio of asymptomatic to symptomatic cases facilitates mitigation efforts since symptomatic individuals usually isolate.