Ducharme is a contributor to TIME. Ducharme is a contributor to TIME. These days, many people use at-home COVID-19 tests when they feel ill, rather than going out to get tested by a professional.

“Infectious diseases don’t respect borders,” says Khoa Thai, a clinical microbiologist at the Star-shl medical diagnostics laboratory in the Netherlands. To limit their spread, we need a globally ...

Nathaniel Hafer receives funding from the National Institutes of Health and the National Science Foundation. Anuradha Rao receives funding from the National Institute of Biomedical Imaging and ...

Over the past four years, many of us have become accustomed to a swab up the nose to test for COVID-19, using at-home rapid antigen tests or the more accurate clinic-provided PCR tests with a longer ...