Dr Nabarro said the rollout of the vaccine will take months as he urged the public to remain vigilant under the COVID-19 restrictions. He warned the virus will quickly surge if people move around freely. Speaking to Sky News, Dr Nabarro said: “I think we both know there are not many things that come without a downside.
“Of course having a potential vaccine candidate is so exciting.
“But there are going to be a number of hurdles still to overcome.
“Vaccinating all the adults and the teenagers in the UK over the coming period is going to take time and we also know that there are some people who are going to want to think a bit before they decide whether to be vaccinated.
“We have to keep our basic principles in place over the coming months otherwise there will be a lot of challenges before everyone is vaccinated.
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“The virus will surge back again especially if we start moving around very freely over the coming weeks.
“That will give us a further miserable time in perhaps January and February before we’re all vaccinated.
“We don’t want a third lockdown so I’m saying, please go on being careful.”
His comments come as it emerged the coronavirus vaccine developed in the UK can prevent up to 90 percent of people from getting Covid-19, according to new data.
Health Secretary Matt Hancock told BBC Breakfast that the Medicines and Healthcare products Regulatory Agency (MHRA) would now assess if the 90% effectiveness dosing regime could be used.
He said: “I’m really very pleased, I really welcome these figures – this data that shows that the vaccine in the right dosage can be up to 90% effective.
“Of course, it’s vital that the independent regulator, the MHRA, will need to look at the data, will need to check to make sure that it’s effective and safe of course.
“But we’ve got 100 million doses on order and. should all that go well, the bulk of the rollout will be in the new year.”