On the same day as the largest vaccination campaign against the coronavirus in the United States began, COVID-19 deaths crossed the 300,000 mark.
Medical workers were among the first to be immunised with the Pfizer-BioNTech vaccine and a separate jab from Moderna is due to be approved next week.
But polls suggest more than half of Americans do not trust the vaccine.

Al Jazeera’s Patty Culhane reports from Washington, DC, the US.

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