Practices that show evidence of effectiveness in improving public health outcomes when implemented in multiple real-life settings, as indicated by achievement of aims consistent with the objectives of the activities.

Use of Stay-at-Home Orders and Mask Mandates to Control COVID-19 Transmission — Blackfeet Tribal Reservation, Montana, June–December 2020

Pratt, C. Q., Chard, A. N., LaPine, R., Galbreath, K. W., Crawford, C., Plant, A., Dinh, T. H.

Release Date:

Case Study

Contact Tracing
Outreach/ Education/ Communications
Healthcare Access and Quality
Neighborhood and Built Environment
Social and Community Context
Tools Included
Outside U.S.

Mitigation and Prevention

This article summarizes COVID-19 mitigation within the Blackfeet Tribal Reservation and changes in incidence depending on the enforcement of masking, stay-at-home orders, and contact tracing. The combination of these efforts was associated with a 33-fold reduction in COVID-19 incidence from October 5 to November 7 in 2020.

Resource Details

Outcomes of Interest

Advancing Racial Equity, Reduction of Health Disparities

Priority Population(s)

American Indian

Setting(s) of Implementation


Geographic Area of Implementation

Implementation Period