Many states that reopened a few weeks ago are seeing spikes in coronavirus cases and hospitalizations. In Arizona, officials say if cases continue to rise, they may have to be more aggressive about enforcing reopening protocols for businesses.In major cities across Texas there are disparities in access to COVID-19 testing, resulting in less testing in black neighborhoods than white neighborhoods.Dr. Atul Gawande spoke with NPR's Mary Louise Kelly about why face masks remain essential in dealing with the coronavirus and the efficacy of different masks.To help with shortages of PPE, one volunteer group has used 3D printers at home to make nearly 40,000 NIH-approved face shields for health care workers and first responders.Sign up for 'The New Normal' newsletter. Find and support your local public radio station.This episode was recorded and published as part of this podcast's former 'Coronavirus Daily' format.