Blair said: 'In the end, you need the data: you need to know who’s been vaccinated and who hasn’t been.'
The former prime minister said Hancock had 'been through the wringer' before he signed up to do the jungle reality show.
Some 1.5 million people have signed a petition demanding his admission to the oldest order of chivalry be rescinded.
The former prime minister has urged world leaders to come together to develop a common strategy to counter the threat to their societies.
Labour leader Sir Keir Starmer has been told to urgently change the party’s direction after its by-election disaster in Hartlepool.
How have Alastair Campbell's politics driven the dynamics in his family? We find out as he appears on Yahoo UK's White Wine Question Time podcast with his daughter, the comedian Grace Campbell.
The former PM said the country must 'live alongside this virus safely and freely through the winter'.
Tony Blair said the government should adopt a policy of mass testing to make it easier to come out of lockdown and prevent future coronavirus outbreaks.
The former Labour leader said Britain was 'slow' in trying to suppress the COVID-19 outbreak compared with other countries.
The former PM said Brexit could have been prevented if Labour had been a 'serious opposition' under Jeremy Corbyn.
The former prime minister criticised both leading parties in the run-up to next month's general election.
Speaking to a Reuters Newsmakers event on Monday morning, Mr Blair said: “I don’t think campaigning for an independent Scotland is extreme. I just don’t agree with it."
Former Prime Minister Tony Blair is willing to vote for Jeremy Corbyn in order to prevent the UK crashing out the EU without a deal.