“It’s influenza, it’s the flu bug that all the doctors warned us was probably coming this winter."
Children under the age of five can now get jabs in the US. Will the UK follow?
All children in London aged one to nine should get a polio booster jab now, experts advise.
The UK Health Security Agency is investigating the extent of community transmission.
The health secretary's announcement follows similar moves in Scotland and Wales.
Nadhim Zahawi's doctor told him he would have been in "big trouble" if he hadn't been vaccinated.
It comes shortly after No.10 warned that anti-vaxxers "thrive on attention".
Suffered a post-jab headache? Anxiety and anticipation might be to blame.
Those eligible are also encouraged to get the flu jab.