It is âtoo lateâ to effectively halt the spread of the Omicron variant in the UK, a Government science adviser has warned.
On Saturday, it was announced all travellers arriving in England will be required to take a Covid-19 pre-departure test from Tuesday â while Nigeria is being added to the Governmentâs travel red list.
Ministers said the extra test was intended to be a temporary measure following new data showing an increase in the number of cases of the new strain linked to foreign travel.
But Professor Mark Woolhouse, who is a member of the Scientific Pandemic Influenza Group on Modelling (Spi-M) which advises the Government, said the measures would not make a âmaterial differenceâ as the variant is already âspreading pretty rapidlyâ.
‘It’s too late’
He told BBC Oneâs Andrew Marr Show on Sunday: âI think that may be a case of shutting the stable door after the horse has bolted.
âIf Omicron is here in the UK, and it certainly is, if thereâs community transmission in the UK, and it certainly looks that way, then itâs that community transmission that will drive a next wave.
âThe cases that are being imported are important, we want to detect those and isolate any positive cases we find, as we would for any case anywhere.
âBut I think itâs too late to make a material difference to the course of the Omicron wave, if weâre going to have one.â
The travel industry reacted with fury after the latest measures were announced, despite ministers insisting they were only âtemporaryâ.
Deputy Prime Minister Dominic Raab told Sky Newsâs Trevor Phillips On Sunday programme: âI know that is a burden for the travel industry but we have made huge, huge strides in this country.
âWe have got to take the measures targeted forensically to stop the new variant seeding in this country to create a bigger problem.
âWe have taken a balanced approach but we are always alert to extra risk that takes us back not forward.â
Vaccines work
Prof Woolhouse said although the numbers of people with the Omicron variant are âstill quite smallâ and likely remain in the hundreds, they are âgrowing quite fastâ.
However, he insisted that vaccinations will still be âvery, very goodâ at protecting against the new variant.
Statistician Professor Sir David Spiegelhalter told Sky Newsâs Trevor Phillips On Sunday programme: âItâs a very difficult situation because we havenât got a lot of data yet at all, almost nothing from this country about what the risks are.
âIn South Africa thereâs data coming out showing pretty strong evidence that the increased risk of transmission and some evidence about people going to hospital, but it may actually be milder but we havenât got enough data yet to be able to say.
âIt doesnât look as if itâs really severe if you get it, I think thatâs about all we can say at the moment.â
Asked if measures to combat the spread of Omicron have gone far enough, Prof Sir David added: âItâs best to be precautionary, when thereâs so much we donât know⊠and when we donât know itâs better to be safe than sorry.â
Related: Raab says Downing Street Christmas parties âthe wrong thing to doâ
