Prognosis
CDC’s Big Mask Change Went From Science to Secret to Surprise
- President swung from encouraging vigilance to celebration
- Walensky decision based on recent scientific developments
This article is for subscribers only.
Sign up here for our daily coronavirus newsletter on what you need to know, and subscribe to our Covid-19 podcast for the latest news and analysis.
For a nation mired in a pandemic for more than a year, the biggest step toward a return to normal came suddenly, even to President Joe Biden.