Click here for free access to our latest coronavirus/COVID-19 research, commentary, and news.
Support nonprofit science journalism
Science’s extensive COVID-19 coverage is free to all readers. To support our nonprofit science journalism, please make a tax-deductible gift today.
Moura/ANDBZ/Abaca/Sipa via AP Images
WANG ET AL./SCIENCE
Vol 368, Issue 6487
10 April 2020