COVID-19 Maps of Mask Use

As of May 2021, we are no longer updating this post.

Data sources: Premise (US only); The Delphi Group at Carnegie Mellon University and University of Maryland COVID-19 Trends and Impact Surveys, in partnership with Facebook; Kaiser Family Foundation; YouGov COVID-19 Behaviour Tracker survey.

Global Health Insights

WHO declares pandemic no longer public health emergency

Media mention

What to know about XBB.1.16, the 'Arcturus' variant

Scientific Publication

Assessing COVID-19 pandemic policies and behaviours and their economic and educational trade-offs across US states from Jan 1, 2020, to July 31, 2022: an observational analysis

Emma Castro, Joseph Dieleman, Christopher J.L. Murray, Aleksandr Aravkin, Kayleigh Bhangdia, Jeremy Dalos, Erin Frame, Amy Lastuka, Theresa McHugh, Sam Ostroff, Peng Zheng, Joanne Amlag, Ryan Barber, Austin Carter, Rebecca Cogen, James Collins, Xiaochen Dai, William Dangel, Amanda Deen, Tatiana Fedosseeva, Abraham Flaxman, Nancy Fullman, John Giles, Gaorui Guo, Simon Hay, Jiawei He, Bethany Huntley, Vincent Iannucci, Kasey Kinzel, Kate LeGrand, Ali Mokdad, Hasan Nassereldine, Yaz Ozten, Maja Pašović, David Pigott, Bobby Reiner, Austin Schumacher, Elizabeth Serieux, Chris Troeger, Anh Vo, Theo Vos

March 23, 2023

News release

The Lancet: Largest US state-by-state analysis of COVID-19 impact reveals the driving forces behind variations in health, education, and economic performance