Coronavirus Hit the U.S. Long Before We Knew

Months before travel bans and lockdowns, Americans were transmitting the virus across the country The Wall Street Journal interviewed disease detectives and reviewed hundreds of pages of new research to piece together how the coronavirus infiltrated the wealthiest nation on earth. The latest genetic, epidemiological and computational research suggests it was spreading inside the country before anyone started looking. How did it happen? Find out here.

October 8, 2020

Why We Don't Know How Many Americans Are Infected With Coronavirus--and Might Never Know

Sparse testing is just one reason the official tally is far too low, but the numbers will get more reliable over time. Read the full story here.

April 4, 2020