Jeffrey Shaman, professor of environmental health sciences at Columbia University School of Public Health, talks with Rachel Maddow about how the doubling nature of the spread of coronavirus makes it crucially important to act quickly in the early stages of an outbreak before cases balloon. Aired on 5/21/2020.
» Subscribe to MSNBC:

MSNBC delivers breaking news, in-depth analysis of politics headlines, as well as commentary and informed perspectives. Find video clips and segments from The Rachel Maddow Show, Morning Joe, Meet the Press Daily, The Beat with Ari Melber, Deadline: White House with Nicolle Wallace, Hardball, All In, Last Word, 11th Hour, and more.

Connect with MSNBC Online
Visit msnbc.com:
Subscribe to MSNBC Newsletter:
Find MSNBC on Facebook:
Follow MSNBC on Twitter:
Follow MSNBC on Instagram:

Study Finds Early Intervention Key To Blocking Coronavirus Spread | Rachel Maddow | MSNBC