In March Prime Minister Boris Johnson put the nation in lockdown, a move which was eventually reversed over the summer with people being urged to return to offices to work and to Eat Out To Help Out at restaurants and pubs. But as the mercury drops, children return to school and students to university, Covid-19 case numbers have risen again.
On 12 October, Stephen Powis, NHS England medical director, said the number of people now in hospital with coronavirus is higher than when the government introduced lockdown in March.
This stark warning pre-empted a new set of lockdown measures, or “three tiers” of lockdown, including Medium, High and Very High. The rules include the closure of some hospitality venues and a ban on household mixing in the most extreme cases.
The prime minister had always previously stressed that the easing of restrictions in England will only take place under the condition that transmission rate for coronavirus remains low.
“It depends on all of us – the entire country – to follow the advice, to observe social distancing, and to keep that R down,” he said in reference to the R rate, which is a key measure of how much Covid-19 is spreading.
Meanwhile the UK’s chief scientific advisor, Sir Patrick Vallance, said “putting absolute timelines on things is not possible". So how long can we really expect the coronavirus outbreak to continue in the UK and what are the proposed exit strategies in order to return to normal life?
When will coronavirus be over?
“It is impossible to put a date on it,” Dr Simon Clarke, professor of cellular microbiology at the University of Reading tells The Independent. “If anyone tells you a date they are staring into a crystal ball. The reality is that it will be with us forever because it has spread now.”
Dr Clarke says it is particularly challenging because it can reside in people without showing any symptoms and then go on to be spread by that person. “There is no reason to say [the virus] won’t continue to do this in the future”.
The scale of this pandemic is unprecedented in living memory..."
Professor Robert Dingwall
Dr Jenna Macciochi, a lecturer in immunology at the University of Sussex agrees it is hard to estimate a date: “It’s a question we probably all want to know the answer to and I doubt anyone knows for sure as it depends on many factors. I’d say we don’t currently know.”
Robert Dingwall, professor of social sciences at Nottingham Trent University describes the situation as being “impossible to give any scientifically-justifiable timetable”.
Michael Head, senior research fellow in global health at Southampton University, says estimates are made particularly difficult because coronavirus is a novel virus. “The difficulty with any modelling or future predictions is this is an entirely new virus, and the scale of this pandemic is unprecedented in living memory.
"The extent of globalisation and international connectivity is such that the ‘end game’ is so difficult to predict with any certainty.” Although Head does say he hopes in the “next few months” cases can be limited and “reduced to much lower levels”.
“However, come the winter, there are significant concerns about a sharp increase in coronavirus cases. This could coincide with the start of flu season and is a time when hospitals and GPs are traditionally under even more pressure,” he adds.
Could we get a vaccine?
The UK’s chief medical adviser Professor Chris Whitty has said “long term, clearly a vaccine is one way out of this and we all hope that will happen as quickly as possible”.
Dr Clarke agrees that the key to combating the coronavirus will be the development of a vaccine. “That is what is going to control things. We can develop ways of controlling symptoms too but they only treat, they don’t get rid of it.”
If vaccines are given to enough of the population (more than 60 per cent) the country will develop what is known as ‘herd immunity’ meaning the virus cannot spread so easily in the future. This herd immunity can also be (controversially) achieved by just allowing the virus to spread widely and letting individual immune systems build up a response to the virus.
Professor Dingwall says: “Coronavirus will be endemic in human populations (like seasonal influenza) until there is a safe and effective vaccine, which can be used on a mass scale to squeeze it out.
“We have done this with smallpox and are close to doing it with polio. Good progress would have been made with measles if it hadn’t been for the recent anti-vax campaigns,” he adds.
But Dr Clarke warns this isn’t as simple as it sounds. “With vaccines you have to generate an immune response that is protective enough – any old immune response won’t do. It has to be able to protect against subsequent infections when that happens.
“Of course [the vaccine] also has to be safe and it has to be long lasting enough. It is pointless giving people immunity for a couple of months.”
He says there is then the additional problem of manufacturing the vaccine in sufficient quantities and quickly enough. “I remind people we’ve been trying to find a vaccine for HIV for the best part of 40 years,” he says.
Professor Macciochi and Mr Head estimate the vaccine could take anywhere between 12 and 18 months to enter the market.
“It could fail at any part during trial,” adds Dr Clarke.
Are there any other solutions?
Mr Head says for the time being the government strategy needs to include greater testing of people in the UK: “[We need] improved diagnostics, particularly a widespread ability to test those who have already been infected.