The two British scientists at the forefront of the search for a coronavirus vaccine have argued over a controversial plan to deliberately infect people with the virus.
Professor Adrian Hill, director of the Jenner Institute at Oxford University, is at the advanced stage of setting up a human study for one of the most promising drugs.
As part of this, he wants to give young, healthy volunteers the vaccine before exposing them to the virus that causes Covid-19.
Professor Adrian Hill, director of the Jenner Institute at Oxford University, is at the advanced stage of setting up a human study for one of the most promising drugs
Sarah Gilbert, professor of vaccination science at the institute, disagrees with his plan because of the potential risk to volunteers
However, Sunday's Mail believes Sarah Gilbert, professor of vaccination science at the institute, will not agree to his plan because of the potential risk to volunteers.
After Prof. Hill announced his intentions, she told BBC Radio 4, "It's not something that will happen in the short term."
According to a source, the two scientists are "not particularly happy" with each other at the moment.
Seán: It's a risk that I want to take
Seán McPartlin volunteers to participate in the Oxford vaccine study
The enemy may be invisible, but for Seán McPartlin, volunteering for the Oxford vaccine trial is “like a war”.
Despite the potential risks, the 22-year-old Oriel College student pictured said, “When soldiers, often no older than boys, go to war, they accept death as soon as their boots hit strange ground.
“They accept it because they know that what they are doing is fair and because it must be done for the safety of loved ones at home. While many wars are often unjust and waged for the wrong reasons, this cannot be said for Covid.
“All over the world people are suffering, people are dying and something has to be done. Attempts to challenge are a war on Covid. I cannot imagine a more just war. "
Hailing from County Meath, Ireland, the philosophy student decided to enroll as soon as the trial was announced.
"When I told my father what I wanted to do, he was horrified," said McPartlin. "I explained to him that the risk to my life was minimal, but he didn't care." Why do you have to be? "He said.
“Nobody wants loved ones to sacrifice or take a risk, but I couldn't be stopped.
"In times of crisis we often ask ourselves:" What can I give? "Well, I'm not a doctor, so I can't pass on my knowledge, but what I can give is my body and my time. So I can help rid the world of Covid."
Their dilemma is exposing volunteers to the virus, which could reduce the time it takes to make a vaccine widely available, or wait until possible long-term effects are better understood.
The news of the conflict comes, as other scientists have told this newspaper, that a vaccine is likely to be only partially effective and carries the risk of severe side effects.
Downing Street was advised that there is a 50 percent chance that an effective vaccine will be given in the UK in the next year is not fully protected against the virus.
Instead, the Oxford University team expects the shock to "mitigate" its worst effects by reducing the severity of symptoms.
According to sources, studies with the vaccine, code-named ChAdOx1 nCoV-19, found that two-thirds of recipients had a headache and one-fifth developed a fever.
The possible restrictions are likely to concern # 10.
A poll found that nearly a third of Britons could turn down a vaccine and that so-called “herd immunity” will be difficult to achieve if less than two thirds of the population accepts the offer.
A source said, “Managing expectations about the vaccine is important.
"It's not done yet, and when it's done it won't be a complete miracle cure or without mild but irritating side effects that might put some people off."
"But it looks like it will mitigate the worst effects for the weakest and is an integral part of the puzzle to combat this."
Prof. Hill and Sir John Bell, the Regius Professor of Medicine at Oxford, were among the scientists who announced last month that initial studies on 1,077 British adults showed the Oxford vaccine had strong antibodies and T-cells – The virus provoked reactions and possibly a "double defense" against them.
Antibodies can disable the coronavirus, while T cells, a type of white blood cell, help coordinate the immune system by targeting infected cells.
During the trials, 90 percent were shown to develop neutralizing antibodies following a vaccine dose, prompting ministers to order 190 million doses of Covid-19 vaccine, 100 million of which are the Oxford version.
Scientists now need to determine whether the vaccine – made from a genetically modified version of a virus that causes colds in chimpanzees – will prevent those who come into contact with the virus from getting sick or relieve their symptoms.
This would be done fastest with a human challenge study, which deliberately infects patients with the virus and uses people under the age of 30 who are less likely to develop serious illness from Covid-19.
The Jenner Institute began work on the vaccine in January.
Last month, Prof. Hill said he worked with a U.S. campaign group called 1 Day Sooner to secure medical doses of Sars-CoV2, the virus that causes Covid-19, needed for the human challenge trials would.
Prof Hill and Prof Gilbert declined to comment, but both must reach an agreement before the proposal is submitted to an NHS ethics committee.
In a statement, the Jenner Institute said, "We do not currently plan to test the Oxford vaccine in Challenge models."