Health experts are starting to track new variants and a slow surge in COVID cases overseas.
They said this could be the first signs of the next COVID wave.
In San Francisco, a steady stream of neighbors stopped by a vaccination site Wednesday to roll up their sleeves for the latest booster.
San Francisco resident Camille Seiberling told NBC Bay Area that stayed careful since the beginning of the pandemic and though COVID cases are way down across the Bay Area. She is mindful of what winter could bring.
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"I’m still being cautious. I’m a parent and we get the notification that kids are still getting COVID,” she said.
Dr. Peter Chin-Hong, an infectious disease specialist with UCSF said that omicron and the next round of subvariants have different characteristics and experts are watching.
“Ba2.75.2. it's known for being the most immune evasive of the bunch, which means that some of the monoclonal antibodies won’t work quite as well. Luckily, it's staying relatively stable,” he said.
Other strains are emerging and fueling a rise in cases overseas.
Christie Smith has more in the video above.
