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New COVID-19 variant "Stratus" drives surge in California cases, raises vaccine update questions.
A new COVID-19 variant, "Stratus" (XFG), is driving a surge in cases in California, with hospital admissions nearly doubling since early July.
First detected in Southeast Asia, Stratus is a hybrid of two Omicron strains.
Despite the rise in cases, hospitalizations remain lower than previous waves.
The variant's impact is also seen in other states, with a lack of federal guidance causing uncertainty about vaccine updates.
Public health officials recommend at-risk groups get vaccinated as soon as possible.
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La nueva variante de COVID-19 "Stratus" impulsa un aumento en los casos en California, lo que plantea preguntas sobre la actualización de la vacuna.