The FDA has halted the emergency use authorization of the monoclonal antibody therapy Evusheld because it does not appear to protect against Covid-19 from viral variants currently circulating in the United States.
Evusheld is a monoclonal antibody therapy used to prevent Covid-19 in immunocompromised people, who are less likely to generate an immune response from Covid-19 vaccination. US officials have warned for months that the antibody therapy was not working against certain emerging variants, but it was still available.
“This means that Evusheld is not expected to provide protection against developing COVID-19 if exposed to those variants,” the FDA said in a statement Thursday. The agency said that if someone becomes infected and develops Covid-19 symptoms, they should seek medical care and may be able to use antivirals Paxlovid, remdesivir or molnupiravir, all of which work against currently circulating variants.
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