41% of new cases in the US are caused by the Covid variant XBB.1.5, which is resistant to antibodies and vaccines.
Scientists have sounded the alarm over the Covid omicron XBB.1.5 variant after it became one of the rising variants in the United States. The report says the variant is highly immune evasive and appears to be more effective when it comes to binding with cells, compared to other sub-variants.
Researchers fear that the Covid-19 vaccines and omicron boosters could be rendered ineffective due to mutations.
XBB stands out because it has an additional mutation which increases its ability to bind with cells.
The rise of XBB sub-variants such as XBB challenges the efficacy of the Covid-19 vaccines and lead to breakthrough infections and reinfections, according to a report by CNBC. According to experts, XBB is resistant to Evusheld, an antibody cocktail that patients with weak immune systems rely on when they are infected with Covid 19.
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