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New COVID variant NB.1.8.1 detected in U.S., spreading in China, but global risk remains low.
The new COVID-19 variant NB.1.8.1, first detected in China, has been found in several U.S. states.
While it is spreading rapidly in China and causing more hospitalizations, there is no evidence it leads to more severe illness.
The World Health Organization monitors it but considers the global public health risk low.
Current vaccines are expected to remain effective, but access remains limited due to regulatory requirements.
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Se detecta una nueva variante de COVID NB.1.8.1 en los Estados Unidos, que se propaga en China, pero el riesgo global sigue siendo bajo.