OLYMPIA, Wash. (AP) — Washington state has seen an average of 1,500 new cases a day of COVID-19 over the past four days, and health officials said Tuesday they are concerned about not only a rise in cases but hospitalizations due to the highly contagious delta variant. The Department of Health said that hospital occupancy is at the highest levels seen to date this year, with more than 600 people hospitalized with COVID-19, an increase of more than 20% from last week. Officials say that more than 94% of all recent cases, deaths, and hospitalizations in Washingtonians 12 years of age and older involve people who have not been fully vaccinated.