Editor’s Note: After publication of this story, Virginia began to provide separate viral and antibody test data. Meanwhile, three other states and the CDC seem to be mixing their COVID-19 test types.

Janette Novak is a freelance journalist and consultant who specializes in teaching online business and small business marketing. Previously, Janette owned a boutique marketing agency and served as a ...

The ability to understand and communicate about data is an increasingly important skill for the 21st-century citizen, for three reasons. First, data science and AI are affecting many industries ...

A new type of blood test could help detect multiple cancers early. A team of researchers in California studied a new multi-cancer early detection (MCED) test called Galleri, which can reportedly ...

Rapid antigen tests are distributed at a center in Northeast D.C. in January. (Sarah L. Voisin/The Washington Post) The ever-shifting pandemic has taken another unexpected turn. In the United States, ...