Skip to main content
Back to Show
PBS News Hour

How scientists use wastewater to track the spread of COVID

As the newest dominant COVID subvariants BQ.1 and BQ.1.1 emerge, scientists are looking beyond traditional methods to track its spread. One important tool in their arsenal is wastewater surveillance. Special correspondent Cat Wise reports from California, one of the first states to test wastewater for COVID.

Support Provided By
Season
January 16, 2026 - PBS News Hour full episode
57:46
January 16, 2026 - PBS News Hour full episode
January 15, 2026 - PBS News Hour full episode
56:46
January 15, 2026 - PBS News Hour full episode
January 14, 2026 - PBS News Hour full episode
57:46
January 14, 2026 - PBS News Hour full episode
January 13, 2026 - PBS News Hour full episode
57:46
January 13, 2026 - PBS News Hour full episode
January 12, 2026 - PBS News Hour full episode
57:46
January 12, 2026 - PBS News Hour full episode
January 11, 2026 - PBS News Weekend full episode
26:52
January 11, 2026 - PBS News Weekend full episode
January 10, 2026 - PBS News Weekend full episode
26:44
January 10, 2026 - PBS News Weekend full episode
January 9, 2026 - PBS News Hour full episode
56:44
January 9, 2026 - PBS News Hour full episode
January 8, 2026 - PBS News Hour full episode
57:46
January 8, 2026 - PBS News Hour full episode
January 7, 2026 - PBS News Hour full episode
57:46
January 7, 2026 - PBS News Hour full episode
January 6, 2026 - PBS News Hour full episode
56:42
January 6, 2026 - PBS News Hour full episode
January 5, 2026 - PBS News Hour full episode
57:46
January 5, 2026 - PBS News Hour full episode
Active loading indicator