Boris Johnson: 'Inevitable' Covid transmission risk with schools return

Prime Minister Boris Johnson says it's "inevitable" that there will be a risk of increased Covid transmission with millions of children returning to school in England.

He explained that reopening schools could be done now because a proportion of the population had been vaccinated.

However, he warned that we must be "very, very cautious" and said that the government would be led by data, not dates.

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