WINDOW ROCK, Ariz. (AP) — Navajo Nation health officials have reported 19 new confirmed cases of COVID-19 and three additional deaths.That brings the total number of people infected to 9,519 with the known death toll at 487 as of Thursday.WINDOW ROCK, Ariz. (AP) — Navajo Nation health officials have reported 19 new confirmed cases of COVID-19 and three additional deaths.That brings the total number of people infected to 9,519 with the known death toll at 487 as of Thursday.