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AstraZeneca's antibody cocktail fails to prevent Covid-19 in latest trial

The trial of 1,121 adult volunteers looked at whether the long-acting antibody combination could protect people who had recently been in contact with the SARS-CoV-2 virus in places like care homes.

Photo: Bloomberg
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Photo: Bloomberg

Suzi Ring | Bloomberg
AstraZeneca Plc’s antibody cocktail was only 33% effective at preventing Covid-19 symptoms in people who had been exposed to the virus, failing a study that was key to the drugmaker’s pandemic push.

The trial of 1,121 adult volunteers looked at whether the long-acting antibody combination could protect people who had recently been in contact with the SARS-CoV-2 virus in places like care homes. The company said it’s running other studies of the medicine that could help clarify the findings.

The outcome is a blow to Astra for a drug that was hoped to be a bright spot in the company’s pandemic efforts