The COVID variant NB.1.8.1, first identified in China in January, has reached the US and now accounts for 10% of global SARS-CoV-2 sequences. Despite concerns, infectious disease specialists have noted that symptoms appear similar to those of existing variants. With emerging mutations on the spike protein, NB.1.8.1 is believed to be more transmissible and may evade some immune responses. Currently, this variant's prevalence is still low in the US but being closely monitored by the CDC and WHO, indicating a need for vigilance.
Currently, it appears that NB.1.8.1 would have similar symptoms to other COVID variants that have recently been circulating. - Dr. Zachary Hoy.
The agency suspects these mutations will increase the virus's transmissibility and potentially diminish the effectiveness of neutralizing antibodies. - World Health Organization.
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