Boris Johnson has warned those who believe contracting a mild illness of coronavirus won't do any harm.
Addressing the nation live on TV this evening, the Prime Minister spelt out the tragedy that can come with the deadly virus.
After outlining a string of new lockdown measures that were announced in Parliament earlier today, Mr Johnson said that a 'mild cough can be someone else's death knell.'
He said: "To those who say we don't need this stuff, we should leave people to take their own risks, I say, these risks are not our own.
"The tragic reality of having Covid is that your mild cough can be someone else's death knell.
"And as for the suggestion that we could simply lock up the elderly and the vulnerable, with all the suffering that would entail, I must tell you, that this is just not realistic because if you let the virus rip through the rest of the population, it would inevitably find its way through to the elderly as well, and in much greater numbers."
The PM added: "That's why, we need to suppress the virus now."
Mr Johnson began his speech by saying that Covid-19 has killed almost a million people and “caused havoc” to economies everywhere.
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“Here in the UK we mourn every person we have lost and grieve with their families,” he said.
However he urged that he is certain “humanity will win” and that he knows the country "can succeed because we have succeeded before" when the country pulled together “in the spirit of national sacrifice” back in March during the national lockdown.
Speaking in the Commons earlier, the PM admitted that like other countries, the UK is now at a "perilous turning point" when it comes to a second wave of the virus.
New cases have quadrupled in a month, with the possibility of tens of thousands of new cases each day in November.
While he was keen to insist that the country will not face a total lockdown like the one that was imposed in March, he made it clear that intervention needs to be taken to suppress the disease.