Lably
Skip to content

Timeline of the COVID-19 pandemic in the United States (2020)

  • 78 min read
  • 2 chapters

Explore on Lably

ToursExplore Lably’s 3D tours

Background

By late November 2019, coronavirus disease 2019 had broken out in Wuhan, China.

As reported in Clinical Infectious Diseases on November 30, 2020, 7,389 blood samples collected between December 13, 2019, and January 17, 2020, by the American Red Cross from normal donors in nine states (California, Connecticut, Iowa, Massachusetts, Michigan, Oregon, Rhode Island, Washington and Wisconsin) included 84 (1.1 percent) that were positive for SARS-CoV-2 antibodies. According to the article, "These findings suggest that SARS-CoV-2 may have been introduced into the United States prior to January 19, 2020."

On December 31, 2019, the U.S. Centers for Disease Control and Prevention (CDC) became aware of cases in China and began developing reports for the Department of Health and Human Services (HHS) on January 1.

Sign in to keep reading

One more chapter is free with a Lably account.

More in History