More than half of US states reporting 'very high' COVID activity levels: CDC More than half of U.S. states are reporting "very high" levels of COVID activity as the virus continues to spread and increase in many parts of the country, according to the latest wastewater data from the Centers for Disease Control and Prevention. At least 27 states are reporting "very high" levels and 17 states are reporting "high" levels of wastewater viral activity. The western region continues to see the highest levels followed by the South, Midwest and Northeast, respectively. Yahoo News

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Current levels are nearing but remain lower than what they were in the winter months, when there tends to be increased spread of respiratory illnesses.

Wastewater data comes with limitations in how well it represents spread in a community, but it may be the best data available, experts say.

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