Two-tier approach could start UK’s move out of lockdown according to experts

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Easing the UK’s Covid-19 lockdown could begin by strengthening protection for the most vulnerable while relaxing restrictions for everyone else, experts suggest.

Researchers say the twin approach – known as segmenting and shielding – is the only immediately available strategy that can help ease lockdown while still saving lives and protecting the NHS.

Academics from the Universities of Edinburgh and London have modeled a range of scenarios to illustrate how different restrictions could be applied to different groups.

Their findings, released yesterday, have now been made available to the UK and Scottish Governments.

The strategy involves segmenting the population into different risk groups – based on a person’s medical history and potential healthcare needs.

Photo by Kate Trifo on Unsplash

Such an approach would give young healthy adults and children greater freedoms, while ensuring that the most vulnerable are protected.

Researchers say lockdown restrictions could be eased for most people, as long as sufficient measures stay in place to keep transmission rates low.

These would include self-isolation of people with Covid-19, quarantining affected households, contact tracing and voluntary social distancing.

The most vulnerable – the elderly and those with underlying medical conditions – would still need to be shielded from contact with anyone potentially infected with the virus.

To achieve this, people sharing a house with a vulnerable person, care workers and health professionals would need to protect themselves from infection.

The team says the risk to non-vulnerable people could be managed without resorting to lockdown.

Instead, they propose a response based on appropriate and effective clinical care and proportionate public health measures.

However, implementing the policy would demand high standards of hygiene and protective measures at home, and in institutions such as care homes and hospitals and ideally  “intensive screening” of everyone who comes into contact with the vulnerable population.

Dr Bram van Bunnik, Postdoctoral Research Fellow at the University of Edinburgh’s Usher Institute, said: “Easing the measures taken during the lockdown is important as they currently have a tremendous effect on our society, but this should only be done in a way that is both safe for the people that are most vulnerable as well as for the health and safety of NHS staff.

“Segmentation and shielding is a possible way of achieving this: measures could be eased for a large proportion of the population, however the vulnerable population likely still needs to be protected for a prolonged period.”

Mark Woolhouse, Professor of Infectious Disease Epidemiology at the University of Edinburgh, added: “Segmentation and shielding recognizes that, although social distancing impacts on the whole of society, the public health burden of Covid-19 is concentrated in a subset of vulnerable people.

“By targeting protection to those that need it most, the strategy helps to ensure that the health system is not overwhelmed by severe cases, while giving policy makers greater leeway to partially relax social distancing measures for the majority of the population.”

 
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