Covid-19 trials
FILE PHOTO: People queue up to receive monkeypox vaccinations during a pop-up clinic at Guy's Hospital in central London, Britain, July 30, 2022. REUTERS/Henry Nicholls/File Photo

The British scientists behind one of the major therapeutic Covid-19 trials have turned their focus to treatments for monkeypox, a viral disease that has been labelled a global health emergency by the World Health Organization.

The team from Oxford University behind the so-called RECOVERY trial — which honed in on four effective Covid treatments — on Tuesday unveiled a new trial, dubbed PLATINUM, to confirm whether Siga Technologies’ tecovirimat is an effective treatment for monkeypox.

Although there are vaccines developed for the closely related smallpox that can reduce the risk of catching monkeypox, there are currently no treatments that have been proven to help hasten recovery in those who develop the disease.

The UK has over 3,000 confirmed cases of monkeypox.

The virus is transmitted chiefly through close contact with an infected person. It typically causes mild symptoms including fever, rash, swollen lymph nodes and pus-filled skin lesions. Severe cases can occur, though people tend to recover within two to four weeks.

Siga’s drug, branded Tpoxx, has been cleared to treat diseases caused by the family of orthopoxvirus that includes smallpox, monkeypox and cowpox by the European Union and United Kingdom, but due to limited trial data it is generally only used in severe cases in Britain.

The PLATINUM trial, funded by a £3.7 million government grant, aims to recruit at least 500 participants. Participants will either be given a 14-day course of tecovirimat twice daily, or a placebo.

To assess the drug’s effectiveness, the rate at which lesions heal, the time taken until patients test negative for the virus, and the proportion of patients who require hospitalization due to complications will be tracked.

“I’m hoping that we can have a result before Christmas, but it depends on the rate of recruitment,” said Sir Peter Horby, Professor of Emerging Infections and Global Health at the University of Oxford and the director of the new Pandemic Sciences Institute.

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