Crap

A wastewater network that monitors for Covid-19 trends is warning that cases are once again rising in many parts of the U.S., according to an analysis of Centers for Disease Control and Prevention data by Bloomberg.

More than a third of the CDC’s wastewater sample sites across the U.S. showed rising Covid-19 trends in the period ending March 1 to March 10, though reported cases have stayed near a recent low. The number of sites with rising signals of Covid-19 cases is nearly twice what it was during the Feb. 1 to Feb. 10 period, when the wave of omicron-variant cases was fading rapidly.

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Bloomberg reviewed data for more than 530 sewage monitoring sites, looking at the most recent data reported during the 10-day window from March 1 to March 10. Out of those sites, 59% showed falling Covid-19 trends, 5% were roughly stable, and 36% were increasing. Rises or declines are measured over a 15-day period.

Fewer sites had data during the Feb. 1 to Feb. 10 window. During that period, 80% of sites showed a decreasing trend, 5% were stable, and 15% were rising.

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Wastewater samples can’t tell how many people have Covid-19. Instead, they measure how much of the virus is being found in sewer water. A high concentration in a sample can indicate a rising number of infections, often days before those cases show up in tests.

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