Good Morning Britain host Adil Ray fears the Indian Covid-19 coronavirus variant could get "out of control".
It comes after 86 local authorities in UK reported having five or more confirmed cases of the variant, which has now become the dominant strain in parts of the North West of England.
Adil said: "I've got lots of sympathy with travellers who want to go on holiday - of course, I want to go on holiday.
"But the medical side tells us we have got a variant that's more transmissable. In the next few weeks and months it could be out of control.
"We need to be that much more careful.
"We are making the mistake we did last summer and the same mistake we made at Christmas."
Dr Hilary added: "And we're also making the mistake of assuming this is the last variant we're ever going to see."
And he said: "There are people now in ITU who have been jabbed, who have got the Indian variant and who are very sick."
However, Blackburn with Darwen’s director of public health Professor Dominic Harrison has said rising cases are unlikely to lead to increased deaths and hospital admissions.
And Health Secretary Matt Hancock told the House of Commons on yesterday that while the B1617.2 variant seemed more transmissible, the evidence suggested vaccines were effective against it.
Mr Hancock said that in Blackburn hospital admissions were “stable”, with eight people currently in hospital with Covid.
In Bolton, 19 people were in hospital with coronavirus – the majority of whom were eligible for a vaccine but had not received one, he added.
A range of measures are being taken to tackle its spread, including accelerating second doses of vaccines for people over 50 and the clinically vulnerable, added. the Health Secretary
