The Navajo Nation has reached 558 positive cases of COVID-19, which is up 70 from Wednesday. Health officials say there are two more reported deaths, which raises the total to 22. Of the positive cases, 222 are in Navajo County, 124 in Coconino County and 59 in Apache County. There have been 2,381 negative tests. Navajo Nation President Nez announced Thursday he was self-quarantining after he came close to a person who has tested positive for COVID-19. A weekend curfew goes into effect on the Navajo Nation at 8 p.m. Friday.