"We are certainly in some high levels of viral transmission. Flu is one of the bigger drivers of that right now," state epidemiologist Dr. Erica Pan said in a recent briefing.
For the week that ended Dec. 30 in Los Angeles County, the wastewater concentration of SARS-CoV-2 - the virus that causes COVID-19 - reached 60% of last winter's peak, up from the prior week's reading of 49%.
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