A new study from the University of Oxford is set to start later this month once it has been given ethical approval. In the study, participants will
A new study from the University of Oxford is set to start later this month once it has been given ethical approval. In the study, participants will be deliberately exposed to the virus for a second time to see how the immune system reacts.
It is believed researchers will look at what dose of virus is needed to re-infect someone after a natural infection, according to The Sun.
The study – funded by the Wellcome Trust – will also look at how the immune system responds and what this could mean for developing protective immunity against the deadly virus.
Helen McShane, professor of vaccinology at the department of paediatrics, University of Oxford and chief investigator on the study, said: “Challenge studies tell us things that other studies cannot because, unlike natural infection, they are tightly controlled.
“When we re-infect these participants, we will know exactly how their immune system has reacted to the first Covid infection, exactly when the second infection occurs, and exactly how much virus they got.
“As well as enhancing our basic understanding, this may help us to design tests that can accurately predict whether people are protected.
“The information from this work will allow us to design better vaccines and treatments, and also to understand if people are protected after having Covid, and for how long.”
Those who volunteer to be re-exposed to the virus will be in a safe and controlled environment while researchers monitor their health.
The 12-month study will also include eight follow-up appointments after patients are discharged.
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“To date, there have been no documented cases of long Covid after second infection.”
More than 4,000,000 people have tested positive for the virus since the first cases were reported last year.
The UK death toll has surpassed 100,000 but over recent weeks, the daily number of deaths has seen a drop following Britain’s successful vaccine rollout.
More than 30,000,000 people have received their first dose of a coronavirus vaccine, while 9,930,846 people in the UK have had their second jab.
Despite the number of people vaccinated, cases of South African and Kent Covid variants have been recorded in vaccinated people.
Dr Susan Hopkins, chief medical adviser for Test and Trace, told the BBC’s Andrew Marr: “We have seen some people who have had their first dose of the vaccine who have had the South African variant and the variant that arose in Kent.
“That’s to be expected, we know that these vaccines aren’t 100 percent protecting you against infection and that’s why we ask people to take caution.”
A new study from the University College London found people aged 30 and under have been less compliant with Covid rules over the last year.
Around 15 percent of Britons failed to follow lockdown restrictions successfully and most were under 30.