Surveys of coronavirus levels in Bay Area wastewater suggest that the region’s relentless spring COVID surge probably rivals the winter omicron wave in terms of the number of people currently infected — in fact, this surge may be the largest yet in some places. But capturing the scale of disease, and conveying to the public the relative risk of getting sick, is becoming increasingly tricky, health experts say.
The huge winter surge peaked in the Bay Area at more than 20,000 reported COVID cases a day in mid-January. Currently, the region is recording far fewer cases — roughly 3,500 a day as of this week — but experts believe the actual number of infections may be anywhere from 2 to 10 times higher, as so many more people use home tests, the results of which are not reported to county or state public health authorities.
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