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		</div><p>A single dose of antibodies drawn from the blood of Covid-19 survivors appears to have improved the symptoms of 10 patients severely ill with the disease, according to new research.</p>
<p>The treatment, known as convalescent plasma (CP) therapy, involves using antibody-rich blood plasma of those who have recovered from coronavirus, which can neutralise the bug to fight infection.</p>
<p>Scientists in China who conducted the preliminary study said no serious adverse reactions were observed after CP transfusion.</p>
<p>They believe the findings, published in the journal Proceedings of the National Academy of Sciences, suggest that CP therapy might be a safe and promising treatment for severe Covid-19 patients, and add further investigation is needed in controlled clinical trials.</p>
<p>But experts have warned the results, while encouraging, should be treated with caution.</p>
<p>Munir Pirmohamed, president of the British Pharmacological Society, said: <em>“This was not a randomised trial and all patients also received other treatments including antivirals such as remdesivir, which are currently in trials for Covid-19.”</em></p>
<p>He added that it was also important to remember that there are potential safety concerns around the treatment, including diseases that occur through transfusion.</p>
<p>Mr Pirmohamed said:<em> &#8220;Even if shown to work, scalability to treat large numbers of patients may become an issue.&#8221;</em></p>
<p>The pilot study involved 10 patients, aged between 34 and 78, who showed severe symptoms such as shortness of breath and chest pain.</p>
<p>The enrolled patients received transfusion of a 200ml dose of CP.</p>
<p>The researchers said all clinical symptoms, which also included fever and cough, subsided within three days.</p>
<p>The patients’ liver and lung function as well as blood oxygen levels were also found to have improved.</p>
<p>The numbers of disease-fighting white blood cells, lymphocytes, also increased, and antibody levels remained high after CP transfusion, the researchers said.</p>
<p>Meanwhile another study, reported in the Journal of the American Medical Association last month, showed that five critically ill coronavirus patients in Shenzen, China, improved after treatment with CP.</p>
<p>The Food and Drug Administration in the US approved the use of CT therapy as an experimental treatment in clinical trials, and for critical patients without other options.</p>
<p>In the UK, it has been reported that the NHS may start giving the therapy to hospital patients in the near future.</p>
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