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In a year that has largely full of bad and tragic news because of COVID-19, there finally some good news. Scientists have a breakthrough in the fight against the virus. The scientists are from the U.S. drug company Pfizer and the German pharmaceutical company BioNTech. Their researchers they have a vaccine that has a 90 per cent success rate in against COVID-19. The researchers also say the vaccine does not serious side effects. Dr. Anthony Fauci, head of the USA's National Institute of Allergy and Infectious Diseases, said the vaccine positive news. He said: "The results really quite good, I extraordinary."

Health experts say it will be months before the vaccine widely available for people to . It needs to stored at temperatures of -80º Celsius. However, Pfizer CEO Dr. Albert Bourla was upbeat about his company's achievement. He said: "Today a great day for science and humanity....We are this critical milestone in our vaccine development program at a time when the world it most." He added: "Infection rates are new records, hospitals are over-capacity and economies are struggling to reopen. With today's news, we are a significant step closer to people around the world with a much-needed breakthrough to help an end to this global health crisis."