Daily figures show the number of people testing positive for COVID in England have reached the highest level since January.
Prime Minister Boris Johnson says there is nothing in the data to indicate the need for restrictions but scientific advisers say preparations for their reintroduction should be made regardless.
A new ‘Delta Plus’ variant is now being investigated, with some concerns it may be more transmissible.
A booster program is being rolled out to support those whose protection might be waning and the government is trying to ensure those who can be further protected, will be.
Professor Adam Finn believes while the vaccines save lives, with five million people yet to get the jab, other interventions are needed.