Senior official Bruce Aylward hails the news of an experimental vaccine being more than 90% effective as 'very positive'.
Pfizer Inc and BioNTech earlier today said their experimental Covid-19 vaccine was more than 90% effective.
British politician whose words he lifted has paid warm tribute to the new US president-elect.
Several thousand protesters, many carrying the red-and-white opposition flag, join march in Minsk
The 94-year-old monarch has donned a face mask in public for first time during the Covid pandemic
Escalation in regional tensions and errors of judgement could ultimately lead to widespread conflict, says Nick Carter
Paty, 47, was decapitated near his school in a Paris suburb.
The event was hailed as 'a historic moment for the Muslim community'.