SAN FRANCISCO (KGO) -- Should the Bay Area brace for a post-Labor Day surge? Some of the state's top doctors say there's reason to be concerned.
"This is not the time to throw up your arms and dance for joy that this is gone," said UCSF's Dr. George Rutherford. "It isn't. It's going to be around for a while."
Over the past two weeks the Bay Area's Delta surge started to plateau, but record travel on Labor Day weekend is raising concern that could change.
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"Cases are going up in several counties in the Bay Area right now, it's on the order of a few hundred per week," said Rutherford. "That's a troublesome scenario, especially when we thought we'd be over the hump."
Dr. Rutherford says it usually takes around a week after a big holiday weekend to see the impacts of an incoming surge. Will we see one in the Bay Area?
"I think there is potential for that, hopefully it will be less than what we saw in July," said Stanford Infectious Disease Dr. Anne Liu.
Dr. Liu predicts the Bay Area's post Labor Day surge will be smaller since the CDC implemented stricter guidance for vaccinated people to still remain masked indoors, a recommendation the agency didn't have in place leading up to our Fourth of July surge.
"That has changed now for very good reason," said Liu. "I'm hoping people have been more cautious over the Labor Day holiday."
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More than 159,000 people have departed through the San Francisco International Airport over the past four days. SFO tells ABC7 this past Friday was the single busiest travel day since the onset of the pandemic.
"Any situation where people are potentially bringing virus from an area where there is a lot of infections to an area where there are not that many infections is concerning," said Liu.
Experts warn the other concerning factor is the current infection rate. ABC7's data analysis shows there were 426 daily COVID cases reported on July 2. Roughly two months later more than 3,200 COVID cases were reported on Sept. 2.
"There is so much more virus out in the community right now," said Liu. "We have to be really careful."
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Additionally, the percent of fully vaccinated Californians only increased slightly during that time frame. According to the ABC7 vaccine tracker, 51% of Californians were fully vaccinated on July 4. As of Sept. 6, 58% of Californians have been fully vaccinated.
"If you look at Great Britain and what happened there, they had a COVID peak that came up and dropped down," said Rutherford. "It was almost like a saddle... it went down and back up again."
"Do you think that will happen here?" ABC7's Stephanie Sierra asked.
"There's no way to tell one way or the other...it might," Rutherford said. "It's merely cautionary at this point in time. We need to avoid crowds and keep the distancing."
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