However, a trial of the vaccine in rhesus macaque
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- юли 10, 2015
You can unsubscribe at any time.Thank you for subscribingWe have more newslettersShow meSee ourprivacy noticeDoubts have been raised about the coronavirus vaccine tipped to be the ‘front runner’ in the fight against COVID 19, after a trial in monkeys found the jab is ‘only partially effective.’The vaccine, developed by Oxford University, is currently being tested in humans, with the promise of 30 million doses for the UK by September if it proves successful.However, a trial of the vaccine in rhesus macaque monkeys did not stop any of the animals from catching the virus, raising doubts about its effectiveness.Writing for Forbes, Dr William Haseltine, a former professor at Harvard Medical School, said: „All of the vaccinated monkeys treated with the Oxford vaccine became infected when challenged as judged by recovery of virus genomic RNA from nasal secretions.“There was no difference in the amount of viral RNA detected from this site in the vaccinated monkeys as compared to the unvaccinated animals. Which is to say, all vaccinated animals were infected.“Experimental coronavirus vaccine based on tobacco could begin human trials next monthThe trial was carried out at the National Institute of Health Rocky Mountain Laboratory, and saw six monkeys given the vaccine, before being exposed to coronavirus.A control group of three non vaccinated monkeys were also infected, before all nine monkeys were monitored for seven days.While all nine monkeys tested positive for COVID 19, those who had been vaccinated were found to have less severe symptoms.Coronavirus vaccine taken by tablet instead of injection could soon be tested in humansDr Haseltine said: „It is crystal clear that the vaccine did not provide sterilising immunity to the virus challenge, the gold standard for any vaccine. It may provide partial protection.“While the findings suggest that the vaccine may only be partially effective, experts claim that the findings are ‘encouraging.’Professor Jonathan Ball, Professor of Molecular Virology at the University of Nottingham, who was not involved in the trial, said: „The fact that the vaccine prevented pneumonia in all, and symptoms in some, of the vaccinated animals is encouraging we know that many vaccines work because they prevent serious disease rather than preventing virus infection.“However, the amount of virus genome detected in the noses of the vaccinated and unvaccinated monkeys was the same and this is concerning.“If this represents infectious virus and a similar thing occurs in humans, then cheap jerseys vaccinated people can still be infected, shed large amounts of virus which could potentially spread to others in the community.
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