When is the vaccine for Covid-19 going to be available? This is the question everyone wants the answer to.
In November, both Pfizer and Moderna have announced their vaccines are more than 90% effective.
Without a cure or definitive treatment, a vaccine is seen as a key way to get life back to normal.
Scientists only started their research at the beginning of the year and have been working quickly to develop and test vaccines.
So when will a coronavirus vaccine be ready? Who would get it first?
BBC health correspondent Laura Foster looks at the situation.
Video by Laura Foster.
Graphics by Aoife McKenna and Mel Lou.