FARMINGTON — The number of Navajo Nation communities named in a Jan. 25 health advisory notice as having uncontrolled spread of COVID-19 declined substantially this week compared to last week. The news came as Northern Navajo Medical Center in Shiprock began scheduling people who already had their first COVID-19 vaccination for their second vaccination. The Navajo Department of Health identified 53 communities, each determined by the number of cases from Jan. 8 to Jan. 21. That is a decrease of 22 communities since the last report was released on Jan. 19. Health officials for the tribe have reported that recent data shows the number of new infections is lowering.