Britain has signed deals with two foreign pharmaceutical giants for 90million doses of different experimental vaccines amid fears one of the world’s leading candidates won’t be ready by September — despite academics saying it could be ready for the autumn.
Agreement has been reached for 30million doses from German firm BioNTech and Pfizer and 60million doses from France’s Valneva.
The figure is in addition to the 100million doses of vaccine that are being developed by Oxford University in partnership with AstraZeneca, as well as another at Imperial College London which started human trials in June.
Business Secretary Alok Sharma said the new agreements would ‘ensure the UK has the best chance possible of securing a vaccine that protects those most at risk’.
But it comes as the government’s vaccine tsar today scuppered hopes of Oxford’s vaccine — one of the front-runners in the world’s race against time for a jab — being ready for September.
Oxford scientists have already said they are ’80 per cent’ confident they can have their jab available for the autumn.
Kate Bingham, chair of the UK’s Vaccine Taskforce, revealed she was still ‘hopeful’ it would be ready by the end of 2020 but admitted that academics are unlikely to get enough data to prove it works until the end of the year.
Results of the first wave of trials of the Oxford jab — called AZD1222 — are set to be published in the prestigious medical journal The Lancet today. But the results will not prove it can save lives, meaning it won’t be licensed and rolled-out yet.
A vaccine against coronavirus being developed in Britain is showing positive signs it could work
WHAT ARE THE LEADING COVID-19 VACCINE CANDIDATES?
University of Oxford
Oxford University academics began developing the ChAdOx1 nCoV-19 vaccine in January. It is now named AZD1222, after the researchers signed a manufacturing partnership with pharmaceutical giant AstraZeneca.
Human trials started on April 23 and they are now in the final phase, with trials being carried out in the UK, Brazil and South Africa.
Lead of the project Professor Sarah Gilbert told The Times she is ’80 per cent’ confident of its success.
The science behind Oxford’s vaccine attempt hinges on recreating the ‘spike’ proteins that are found all over the outside of the Covid-19 viruses.
It is made from a weakened version of an adenovirus from chimpanzees that has been genetically changed so it is impossible for it to grow in humans.
Imperial College London
Fifteen volunteers have already been given Imperial’s trial jab and testing is expected to ramp up to include as many as 200-300 participants in the coming weeks. A second trial, with 6,000 people, will come later.
But Professor Robin Shattock, lead researcher, said the vaccine won’t be available until at least 2021 even if everything goes according to plan.
If the jab works, the team want to make it as cheap as possible so the entire British population could be vaccinated for the ‘really good value’ of just under £200million.
Imperial’s vaccine also attempts to mimic the spikes on the outside of the Covid-19 virus. However, it will work by delivering genetic material (RNA) from the virus, which programs cells inside the patient’s body to recreate the spike proteins.
US drug giant Pfizer — famous for Viagra — and German firm BioNTech have been working on a number of potential Covid-19 vaccines under the ‘BNT162 program’.
It reported positive preliminary results from the ongoing Phase I/II clinical trial of one called BNT162b1 on July 1. Tests on 24 volunteers showed that it was well tolerated and produced dose dependent immunity.
Dr Kathrin Jansen, Pfizer’s head of vaccine research and development, said the vaccine ‘is able to produce neutralizing antibody responses in humans at or above the levels observed’ in Covid-19 survivors.
Pfizer received fast track designation from the US Food and Drug Administration (FDA) for two of their four potential Covid-19 vaccines this month.
French firm Valneva have yet to begin human trials of their Covid-19 vaccine, called VLA2001. Company bosses hope to scale up testing by the end of this year.
The jab is currently only in pre-clinical studies — meaning it is being tested in the lab and on animals.
If proven successful, the vaccine will be manufactured at its facilities in Livingston, Scotland and in Solna, Sweden.
Massachusetts-based Moderna was the first US company to start human trials of its potential Covid-19 vaccine, known as mRNA-1273, on March 16.
The jab has proven to trigger an immune response in all 45 injected volunteers, according to a study published in the prestigious New England Journal of Medicine on July 14.
Moderna’s shot showed early promise in its phase 2 human tests last month. The company reported that it triggered antibody production on par with that seen in recovered coronavirus patients.
Chinese vaccine Ad5-nCoV, made by CanSino, was the very first shot to enter clinical trials earlier this year and is a leading candidate.
A trial of 108 healthy volunteers in China showed it safely triggered an immune response in participants.
Results published May 22 in The Lancet showed most of the people dosed with the vaccine had immune responses, although their levels of antibodies thought to neutralize the virus were relatively low. Researchers saw a stronger ramp-up of other immune compounds, called T-cells, that might also help fight the infection off.
Johnson & Johnson
The drug giant started work on the vaccine in January, two months before Covid-19 was labelled a global pandemic.
A vaccine trial spearheaded by Johnson and Johnson will start recruiting people in September, with clinical data available by the end of the year.
An ’emergency use’ batch of the vaccine is anticipated to be authorised as early as 2021, which would likely be prioritised for vulnerable people.
Teams from Oxford University and the American pharmaceutical company Moderna have both revealed people in their studies are showing signs of immunity.
Each has been working on separate experimental jabs for months to try to protect millions of people from catching the coronavirus in future.
People being given the Oxford vaccine have been developing antibodies and white blood cells called T cells which will help their bodies fight off the virus if they get infected, it is reported.
And experts at Moderna, based in Cambridge, Massachusetts, said participants in their trial – of a different type of vaccine – all successfully developed antibodies.
The vaccines work by tricking the body into thinking it’s infected with Covid-19 and causing it to produce immune substances that have the ability to destroy it.
While early research focused on antibodies, scientists are increasingly turning to a type of immunity called T cell immunity — which is controlled by white blood cells — which has shown signs of promise.
One source on the Oxford project told ITV News: ‘An important point to keep in mind is that there are two dimensions to the immune response: antibodies and T-cells.
‘Everybody is focused on antibodies but there is a growing body of evidence suggesting that the T-cells response is important in the defence against coronavirus.’
Oxford’s phase 3 trial is involving around 8,000 people across the UK and also up to 6,000 people in Brazil and South Africa, where the jab may be easier to test because more people are infected with the coronavirus.
The vaccine is being manufactured by AstraZeneca, based in Cambridge, England, and millions of doses have already been ordered by Number 10 in the hope that it will work.
ITV’s political editor Robert Peston wrote in a blog that he has been told to expect good news on the trial later this week, with results expected in the British medical journal The Lancet on Thursday.
The piece said: ‘Apparently the vaccine is generating the kind of antibody and T-cell (killer cell) response that the researchers would hope to see.’
In the early stages researchers will want to see that the jab is safe for people to take and doesn’t cause serious side effects, and also that it seems to be stimulating the immune system in the right way.
If it passes these checkpoints researchers are expected to move on to even larger tests with thousands more members of the public.
In its own tests Moderna, the US pharmaceutical company, reports that its vaccine has passed these early milestones and now plans to move on to bigger trials.
Researchers at the company last night announced that all 45 volunteers in its early phase had developed immune responses after being given the vaccine.
They also found the jab — one of the front-runners in the global coronavirus vaccine race — was safe and no participants suffered any serious side effects.
But more than half reported mild or moderate reactions such as fatigue, headache, chills, muscle aches or pain at the injection site.
Scientists said side effects were a ‘small price to pay’ for protection against Covid-19.
Dr Anthony Fauci, the US government’s top infectious disease expert, said: ‘No matter how you slice this, this is good news.’
Moderna was the first US company to start human testing of a vaccine for the novel coronavirus on March 16, 66 days after the genetic sequence of the pathogen was released by China.
It’s now preparing to start a 30,000-person trial later this month to prove the vaccine really is strong enough to protect against the coronavirus.
The share price of the company surged on the news as it stoked hopes of progress in the global battle against Covid-19.
The US federal government is supporting Moderna’s vaccine with nearly half a billion dollars in funding.
Its vaccine, known as mRNA-1273, works using ribonucleic acid (RNA), which is a chemical messenger in human bodies that contains instructions for making proteins.
The jab introduces RNA which programmes the body to make proteins that look like those found on the surface of the coronavirus, which triggers the immune system to react because it recognises those proteins as a danger – even though they aren’t actually attached to a virus and can’t cause any harm.
This then trains the body to recognise these as a foreign invader, and mount an immune response against it.
The results, published in the prestigious New England Journal of Medicine, involved three groups of 15 volunteers aged 18-55.
The groups tested 25, 100 or 250 micrograms of the vaccine. Everyone got two doses, 28 days apart.
The team reported a dose-dependent effect, whereby the participants grew a larger antibody response the higher their vaccination dose was.
In comparison, the University of Oxford team’s jab works by injecting a damaged part of the real coronavirus that has been attached to another, harmless, virus.
It’s a type of immunisation known as a recombinant viral vector vaccine.
Researchers place genetic material from the coronavirus into another virus that’s been modified. They will then inject the virus into a human, hoping to produce an immune response against SARS-CoV-2.
A quarter of Britons could REFUSE to take coronavirus vaccine despite risks being ‘overestimated by web myths’, new survey shows
More than a quarter of people in the UK may refuse to be vaccinated against coronavirus, a worrying survey reveals.
Results will be released today for a global frontrunner vaccine, developed at Oxford University, showing whether it is safe and triggers a positive immune response.
But shocking figures show, even if this first step is successful, and the treatment is proven to work in the coming months, 14 per cent of people in the UK say they would be unwilling to be vaccinated.
Another 13 per cent say they don’t know if they would refuse a vaccine, according to a national survey.
There are concerns social media is being overwhelmed by ‘anti-vaxxer’ myths and scare stories, which the Daily Mail has campaigned against following a resurgence of measles and mumps.
Millennials are among the most wary, with a coronavirus vaccine most opposed by people aged 25 to 34.
The key to beating the virus is to achieve ‘herd immunity’, which most experts say means at least 60 per cent of the population having been vaccinated or recovered from the virus.
Paul Hunter, professor of medicine at the University of East Anglia, said: ‘If we get an effective vaccine, and almost everyone takes it up, overnight all the restrictions can stop and life will return to normal like it was before March, with no social distancing or restrictions.
The carrier virus, weakened by genetic engineering so it doesn’t make people ill, is a type of virus called an adenovirus, the same as those which cause common colds, that has been taken from chimpanzees.
If the vaccines can successfully mimic the spikes that are found on the outside of Covid-19 inside a person’s bloodstream, and stimulate the immune system to create special antibodies to attack it, this could train the body to destroy the real coronavirus if they get infected with it in future.
It could be developed so rapidly by Professor Sarah Gilbert, a vaccinology expert, and her team because they already had a base vaccine for similar coronaviruses.
Professor Gilbert said earlier this month that protection from a jab against coronavirus should last for several years at least.
She told MPs she was optimistic that a vaccine would provide ‘a good duration of immunity’.
She is the world-renowned expert leading an Oxford University team devising a vaccine, so her claim could help to dispel the fears over how long protection against Covid-19 might last.
Concerns had been raised after those with other types of coronavirus – which are less dangerous and cause the common cold – were able, in tests, to be reinfected within a year.
But Professor Gilbert told the Commons science and technology committee there may be a better result from a vaccine than the natural immunity acquired when individuals simply recover from a virus.
She said: ‘Vaccines have a different way of engaging with the immune system, and we follow people in our studies using the same type of technology to make the vaccines for several years, and we still see strong immune responses.
‘It’s something we have to test and follow over time – we can’t know until we actually have the data.
‘But we’re optimistic based on earlier studies that we will see a good duration of immunity, for several years at least, and probably better than naturally-acquired immunity.’
The key question is whether the vaccine will protect them from becoming infected, or simply make them less ill. It may also work less well in older people because their immune systems are weaker.
Sir John Bell, regius professor of medicine at Oxford University, also gave evidence to the committee, warning that the UK must ‘prepare for the worst’ this winter, rather than rely on the development of a vaccine.
Scientists at Moderna in Cambridge, Massachusetts, are developing a vaccine which uses RNA to force the body to produce proteins that look like the coronavirus and spur the immune system into action
Experts in an Oxford Vaccine Group lab in England have developed a vaccine which injects a damaged and harmless section of the coronavirus in order to provoke the immune system
GLAXOSMITHKLINE INVESTS £130M IN VACCINE CANDIDATE
The British pharmaceutical firm GlaxoSmithKline said it will invest £130million in a coronavirus vaccine being made by the company CureVac.
In a Dragon’s Den-style deal GSK, a company worth £82billion, will help to pay for German CureVac’s jab candidate in exchange for 10 per cent of the business.
CureVac’s vaccine, which GSK called ‘cutting edge’ works by injecting genetic material called mRNA, which forces the body to make proteins that look like they are part of the coronavirus, therefore forcing the body to mount an immune response.
The government in Berlin has a 23 per cent stake in CureVac and the EU has invested €75million euros (£68m) into the company.
GSK’s agreement with CureVac covers the research, development, manufacturing and commercialisation of up to five mRNA-based vaccines.
The development could expand the range of diseases that can be prevented or treated, GSK said.
Roger Connor, president of GSK Vaccines, said: ‘GSK’s self-amplifying mRNA (SAM) vaccine technology has shown us the potential of mRNA technology to advance the science of vaccine development, and CureVac’s experience complements our own expertise.
‘Through the application of mRNA technology… we hope to be able to develop and scale up advanced vaccines and therapies to treat and prevent infectious diseases quicker than ever before.’
Dr Franz-Werner Haas, acting CEO at CureVac, said: ‘We are delighted to partner with GSK. With this collaboration, we are gaining a world-class partner whose expertise and global footprint will allow us to further develop and translate the value of our platform into potential products for the world.’
But he said he has now seen tests for coronavirus of a good standard which can produce a result in a ‘few minutes’.
Sir John said: ‘That would be transformative because we could all test ourselves regularly and test our kids after they’ve been off to a rave and all that stuff.’
He also urged Britons to have the flu jab to ‘avoid pandemonium in A&E departments’.
Trials of a potential antibody treatment that could protect older people from coronavirus have also started.
Instead of a traditional vaccine the proposed treatment would see patients given a three-minute infusion of antibodies to the virus that could provide protection for up to six months.
For people whose immune systems do not respond to a vaccine, including those taking immunosuppressant drugs or undergoing chemotherapy, it could provide alternative way of developing resistance to the virus.
Older people also have less of a response to vaccines so the antibody infusion could help give extra protection for older people who are more at risk from coronavirus, reported The Times.
Pharmaceutical firm AstraZeneca are trialling the treatment and the drug maker is also working with Oxford University on a potential vaccine.
As well as preventing people catching the disease antibody therapy can help people who have caught it recover more quickly.
Sir Mene Pangalos, who heads the company’s research into treating respiratory diseases told The Times: ‘There’s a population who are elderly that [may not] get a particularly good immune response to the vaccine,
‘In those instances you might want to prophylactically treat those patients with an antibody to give them additional protection.’
It is not yet clear if the treatment will work and the first human trial will only have around 30 participants.
If no safety issues arise larger scale testing could begin in the autumn.
Sir Mene added: ‘We’re going to do this as fast as we can. Obviously we’ve got to show that you’re safe but antibodies are well known entities – it should be safe.
The trial comes following initial research at Vanderbilt University in the United States which looked into monoclonal antibodies, which can imitate the antibodies created by the body after being infected by coronavirus.
However the antibody therapy is not expected to be an alternative to a vaccine as it will cost a much while not providing protection for as long a period of time.
- COVID-19: 'Mixing coronavirus vaccines is not recommended,' health agency warns
- Covid-19: NI's vaccination programme success continues
- COVID-19: India's vaccine rollout-for-all stumbles before it starts amid record case numbers
- UK emergency Covid-19 field hospitals asked to be 'ready' to admit patients as crisis looms
- TRACKER: Which COVID-19 vaccines are being eyed by the Philippines?
- The Big Read: Conspiracy theories, scientific misinterpretations, plain ignorance abound in COVID-19 infodemic
- A top soldier has his marching orders: Deliver COVID-19 vaccines to Canadians by September
- The world's biggest vaccine producer is running out of Covid-19 vaccines, as second wave accelerates
- Wary of Covid-19 vaccine shortages, Asian governments determined to develop home-grown shots
- Covid-19 vaccine: Key India-made vaccines set to be rolled out soon
- Covid-19: Lack of queue-jumping helped vaccine drive, says Matt Hancock
- Part 2 | What you need to know about the COVID-19 vaccine manufacturers
- Beijing Criticizes Developed Nations for ‘Hoarding’ COVID-19 Vaccines, Praises BRICS for Equity
- COVID-19 Vaccine Roll Outs in ASEAN & Asia – Live Updates by Country
- COVID-19: UK alert level lowered from 4 to 3 - what it means
- Covid-19: Novavax set for India launch with Serum Institute of India as manufacturing partner | India News - Times of India
- COVID-19: Indian coronavirus variant expected to become most dominant in UK, says Professor Chris Whitty
- African countries have struggled to secure enough Covid-19 vaccines. So why are thousands of doses going to waste?
- COVID-19: British holidaymakers could be allowed to travel to Europe within weeks
- COVID-19: The three days in April that may have fuelled UK outbreak of Indian coronavirus variant
Britain signs deal for 90million doses of two possible foreign Covid-19 jabs as UK's vaccine tsar dashes hopes of Oxford candidate being rolled-out by September by warning data won't be ready until the end of the year have 3485 words, post on www.dailymail.co.uk at July 20, 2020. This is cached page on Talk Vietnam. If you want remove this page, please contact us.