Leicester has become the first city in the United Kingdom to be put under a local lockdown, as the government seeks to curb the rise of coronavirus cases in the city.
Matt Hancock made the announcement in the House of Commons.
A new indoor testing centre will open on Tuesday at the Highfields Community Centre, with further testing sites planned.
Asked how people would be stopped from travelling outside the city, the health secretary replied: "We're recommending against all but essential travel both to and from and within Leicester, and as we saw during the peak, the vast majority of people will abide by these rules".
He said in order to control the virus "it requires sacrifices by everybody, we need to do that in Leicester now". "We really need to speed this up".
Health Secretary Matt Hancock told lawmakers late Monday after a series of meetings, including one chaired by Prime Minister Boris Johnson, that in addition to the school closures, shops that don't sell essential goods, such as food and medicines, will have to shutter themselves again, barely two weeks after they reopened. "Those shielding were particularly anxious".
However, city mayor Peter Soulsby said it had been hard to get details from the government and even the exact boundaries of the lockdown.
"I want to stress to people that we are not out of the woods yet".
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