English-based AstraZeneca has developed the vaccine with scientists at Oxford University.(AP: Ted S Warren)ShareFacebookTwitterArticle share optionsShare this onFacebookTwitterLinkedInSend this byEmailMessengerCopy linkWhatsAppPrint contentPrint with images and other mediaPrint text onlyPrintCancelA COVID-19 vaccine developed by scientists at Oxford University is safe and has produced an immune response in early-stage clinical trials in healthy volunteers, preliminary results say.Key points:The experimental vaccine, called AZD1222, was administered to healthy adults aged 18-55 years with no history of COVID-19It did not prompt serious side effects and produced antibody and T-cell immune responsesSeveral countries have signed agreements with AstraZeneca to produce the vaccineThe vaccine, called AZD1222 and under development by AstraZeneca and scientists at Oxford, did not prompt any serious side effects and elicited antibody and T-cell immune responses, according to trial results published in The Lancet medical journal. The strongest response was seen in people who received two doses."We hope this means the immune system will remember the virus, so that our vaccine will protect people for an extended period," study lead author Andrew Pollard of the University of Oxford said."However, we need more research before we can confirm the vaccine effectively protects against SARS-CoV-2 (COVID-19) infection, and for how long any protection lasts."Coronavirus latest: Follow all the latest information in our COVID-19 live blog.AstraZeneca's is among the leading vaccine candidates against COVID-19, that has claimed more than 600,000 lives worldwide, alongside others in mid and late-stage trials.AstraZeneca has signed agreements with governments around the world to supply the vaccine should it prove effective and gain regulatory approval.The UK Government has already signed a deal to secure 100 million doses of the vaccine while the US has a contract for 300 million of the initial 1 billion doses produced.British Prime Minister Boris Johnson said the announcement was "very positive news", but also warned there are still further trials to take place.Loading"There are no guarantees, we're not there yet & further trials will be necessary,
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