The graphs below summarize the Washington State COVID-19 positivity rate through July 12, 2020. Data are taken from the Washington State Department of Health (DOH) and the University of Washington Virology Lab (UW). The DOH data are complete through July 4, 2020 and that is what is shown here. [Click images to enlarge.] I don’t report partial results.

The UW data indicate an uptick in the positivity rate during the last week. This is consistent with my daily DOH tracker. Many states in the nation are experiencing a sharp increase and a few are heading into the weeds as indicated by their high positivity rates (15% and up). I dearly hope that we can reverse the most recent trend and suppress transmission.

I need to remind everyone that the positivity rate is a proxy for the true rates of COVID-19 incidence and prevalence.

We all need to renew our efforts — P.J. Drongowski