COVID-19: UK has hit a 'dangerous moment' in pandemic amid warnings 'vaccine-beating variants' will emerge
Dr David Nabarro, the World Health Organisation's special envoy on
COVID-19, said that despite low infection levels, unlocking restrictions too quickly in the UK could create a further "spike" in infections.
He also issued a warning about variants, saying "vaccine-beating" forms of the virus will almost certainly emerge sooner or later.
Referring to the UK's vaccine success, he told Sky News: "It is always the most dangerous moment when you are managing an infectious disease as you get that curve coming right down to zero.