After weeks of decline, experts who track coronavirus levels in San Diego's wastewater say they are starting to see a slight uptick in viral load.
“This slight uptick is not something to be alarmed about, but something we’re watching with caution," Dr. Christopher Longhurt, Chief Medical Officer at UC San Diego Health, told ABC 10News Monday.
Several countries, including the United Kingdom and China, have seen a recent spike in COVID cases, possibily linked to the new BA.2 subvariant of Omicron. In the United States, experts have been looking more and more to wastewater testing as the best early indicator of a COVID surge. UCSD began testing wastewater early in the pandemic, with broader testing also now being done at other sites in San Diego County, including the Point Loma Sewage Treatment Plant.
Longhurst says wastewater testing showed signs of the Delta Wave in 2021 nearly three weeks before case numbers began to jump. Similarly, wastewater testing suggested the Omicron wave would be the biggest yet, with those indictators coming a week before the rise in cases in January. Longhurst says the last data analyzed from Point Loma on March 13 and March 14 show an uptick. While he says it's too early to tell for sure and more data is needed, he hopes San Diego's high vaccination rate, combined with the high number of people recently infected with Omicron, could keep the new wave manageable.
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