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WHO warns against ‘initially promising’ Covid therapy | WHO warns against ‘initially promising’ Covid therapy |
(about 4 hours later) | |
The World Health Organization (WHO) has advised against using plasma containing Covid-19 antibodies to treat patients with the virus, finding it to be both ineffective and a waste of resources. | |
In an advisory published by the British Medical Journal on Monday night, WHO experts warned that “a transfusion of blood plasma from someone who has recovered from Covid-19” – known as convalescent plasma therapy – “is not recommended for patients with Covid-19.” | |
The organization issued a particularly “strong recommendation” against the therapy for those experiencing mild illness and a general recommendation against it for those with severe or critical illness. | |
“Despite its initial promise, current evidence shows that it does not improve survival nor reduce the need for mechanical ventilation, and it is costly and time-consuming to administer,” the advisory declared, citing evidence from 16 trials and more than 16,000 patients. | |
The US National Institutes of Health made a similar ruling in August, revealing that clinical trials showed the therapy “did not prevent disease progression in a high-risk group of outpatients with Covid-19 when administered within the first week of their symptoms.” | |
Dr. Clifton Callaway, who worked on the trial, said researchers were hoping the plasma therapy “would achieve at least a 10% reduction in disease progression,” but instead had observed a reduction of less than 2%. | |
The US Food and Drug Administration issued an emergency-use authorization for convalescent plasma therapy in August 2020, but went on to limit its use in February to only “hospitalized patients with Covid-19 early in the disease course, or hospitalized patients who have impaired humoral immunity.” |
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