This is an extract from an interview Matt Hancock gave on Radio 1 this morning, when he was reacting to the sharp increase in reported cases.
The health secretary stressed how serious coronavirus can be for young people, even though they are less likely to die or get seriously ill.
"Long Covid is really serious. And people can be in a bad way for months and months and months," he says.
"The second really important message is that younger people spread the disease, even if they don't have symptoms.
"Don't kill your gran by catching coronavirus and then passing it on. And you can pass it on before you've had any symptoms at all."
And now that schools have opened the number of cases has rocketed and children are unwittingly bringing the virus back into their homes, possibly infecting older members of their family. Isn't it about time we had some joined up thinking from this government. It's only a week ago that Gavin Williamson and Boris Johnson were telling us that young people were almost immune.