The European Union has begun one of the world's biggest coronavirus vaccination campaigns. It aims to protect 450 million people across 27 countries. The bloc's leaders have hailed the rollout of the Pfizer-Biontec vaccine as a moment of unity and hope. A group of nurses in Rome was the first in Italy to get the jab. The country was one of the first in Europe to go into lockdown. More than 70,000 people there have died from the virus since February. But with a new variant spreading quickly, will the initiative be effective? Presenter: Hashem Ahelbarra Guests Annie Sparrow, Professor of Population Health Science and Policy at Mount Sinai Hospital. Gloria Taliani, Professor of Infectious Diseases at the Sapienza University of Rome. Azeddine Ibrahimi, Professor of Medical Biotechnology at Mohammed V University. - Subscribe to our channel: aje.io/AJSubscribe - Follow us on Twitter: twitter.com/AJEnglish - Find us on Facebook: www.facebook.com/aljazeera - Check our website: www.aljazeera.com/ #AlJazeeraEnglish #InsideStory #COVID-19 #Vaccine