A timeline of clinical vulnerability

Some people have always been at greater risk from infection, and UK policy has treated them in very different ways over the decades, from ’flu vaccination programmes in the 1960s to shielding in 2020 and narrowing vaccine eligibility today. This timeline sets out, in order and with sources, how clinical vulnerability has been defined, protected and sometimes overlooked.

Chapter One

Before Covid-19: protecting 'at risk' groups

A nurse giving a vaccination to a patient in a clinic.
Photo: i News, November 2025 Vulnerable patients at risk after more than half of NHS staff fail to get ’flu jab
  1. December 1952

    The Great Smog of London

    Coal smoke trapped by cold, still weather covered London for five days. About 4,000 people died at the time, and later estimates put the toll at 10,000 to 12,000, mostly from breathing and lung illness. It led to the Clean Air Act 1956.[57][58]

  2. Late 1960s

    Annual ’flu vaccination recommended for clinical risk groups

    Influenza immunisation has been recommended in the UK since the late 1960s, initially for people in clinical risk groups at higher risk of serious illness and death.[1][2]

  3. 2000

    ’Flu vaccination extended to everyone aged 65 and over

    Policy was widened beyond clinical risk groups to include all people aged 65 or over.[1]

  4. 2004

    First Heatwave Plan for England

    Published after the August 2003 heatwave, which caused more than 2,000 excess deaths in the UK over ten days, the plan set out how the NHS, councils and other services should protect people during severe heat.[59]

  5. April to June 2009

    H1N1 ('swine ’flu') pandemic reaches the UK

    The first UK cases were confirmed on 27th April 2009 and the World Health Organization declared a full pandemic (Phase 6) on 11th June 2009.[3]

  6. 2009

    Risk groups prioritised for pandemic vaccine

    Vaccine priority went to pregnant women, front-line health and social care workers, and people aged over six months with chronic conditions that put them at higher risk of severe illness or death from influenza.[3]

  7. July 2010

    Independent review of the 2009 pandemic response

    Dame Deirdre Hine's review concluded that the UK response had been proportionate and effective, while noting that the H1N1 strain proved milder than the pandemic planners had anticipated.[3]

  8. 2013

    Children added to the ’flu programme

    Following JCVI advice in 2012, a phased extension of the ’flu programme to children aged two to under seventeen began in 2013.[1]

  9. January 2017

    Energy Priority Services Register widened

    Ofgem widened the register to any energy customer in a vulnerable situation, including temporary ones. People who rely on medical equipment that needs electricity can register for advance warning of planned power cuts and help in an emergency.[60]

Chapter Two

2020: shielding

A digital roadside sign above a motorway reading "Stay home, protect NHS, save lives".
Photo: The Independent, March 2026 Stay-at-home pandemic order sent message NHS was closed – Covid-19 Inquiry
  1. 2020

    Clinically Vulnerable Families is founded

    CVF describes itself as a community founded in 2020, providing information and support for people who are Clinically Vulnerable to Covid-19, and it began as a Facebook group. It is now a community interest company.[4][5]

  2. March 2020

    Two risk categories defined: Clinically Vulnerable and Clinically Extremely Vulnerable

    Early Covid-19 guidance set out a 'Clinically Vulnerable' group, which included everyone aged 70 or over, pregnant women and people with a range of chronic conditions, and a smaller 'Clinically Extremely Vulnerable' group advised to shield.[6][7]

  3. 20th March 2020

    First NHS Shielded Patient List produced

    The first list of people at highest clinical risk was assembled from existing NHS data, then updated as GPs and hospital clinicians added patients.[8]

  4. 23rd March 2020

    Shielding letters and texts begin; national support service goes live

    Notifications to people identified as Clinically Extremely Vulnerable began on 23rd March 2020, the day the UK entered lockdown, and the public-facing Clinically Extremely Vulnerable People Service went live. NHS guidance defined shielding as staying at home and avoiding all face-to-face contact for at least 12 weeks.[9][8][10]

  5. April to May 2020

    The Shielded Patient List grows to 2.2 million

    The list rose from about 900,000 within two days to 1.3 million by 12th April, 1.8 million by 18th April and 2.2 million by 7th May 2020.[9]

  6. 15th June 2020

    Face coverings become compulsory on public transport

    Face coverings became a legal requirement for passengers on public transport in England, enforced by the police and transport operators, with a fixed penalty for refusing.[11]

  7. 22nd June 2020

    Phased relaxation of shielding announced

    A letter from the Chief Medical Officer for England and NHS England's Medical Director set out an easing of shielding from 6th July and again from 1st August 2020.[12]

  8. 24th July 2020

    Face coverings required in shops and other indoor places

    The requirement was extended to shops, enclosed shopping centres, banks, post offices and transport hubs, and later to more venues. From 24th September 2020 the fixed penalty rose to £200 for a first offence, doubling on repeats.[13][14]

  9. 1st August 2020

    Shielding paused in England

    The national shielding programme paused. Free food parcels, medicine deliveries and Statutory Sick Pay eligibility linked to shielding ended, and people were told they could return to COVID-secure workplaces.[15][8]

  10. Autumn 2020

    Clinically Extremely Vulnerable group extended; guidance tied to local restrictions

    New guidance issued on 13th October linked advice to local alert levels, and further guidance followed ahead of the November lockdown. NHS England also asked trusts to add adults with stage 5 chronic kidney disease and adults with Down's syndrome to the Shielded Patient List, using an Oxford risk model.[16][17]

  11. December 2020

    Health Foundation analysis of the shielded population

    Analysis found over two million people had been identified as Clinically Extremely Vulnerable, that a third of those shielding reported reduced care for existing conditions, and that 37 per cent reported a decline in mental health and wellbeing.[18]

  12. 16th December 2020

    Air pollution recorded as a cause of death

    An inquest found that air pollution made a material contribution to the death of nine-year-old Ella Adoo-Kissi-Debrah, who had severe asthma and lived near the South Circular road in London. It was the first time in the UK that air pollution was listed as a cause of death.[61]

  13. 22nd December 2020

    Parliamentary committee criticises siloed support

    The Women and Equalities Committee found that support for the Clinically Extremely Vulnerable relied on medical criteria alone.[19]

  14. 30th December 2020

    JCVI sets priority groups for Covid-19 vaccination

    The JCVI placed Clinically Extremely Vulnerable people under 70 in priority group 4, alongside those aged 70 to 74. Adults aged 16 to 64 with underlying health conditions that raise the risk of serious disease, the group that included Clinically Vulnerable adults under 65, were placed in group 6, after groups 1 to 5, which included everyone aged 65 and over.[20]

Chapter Three

2021: a second lockdown, a new risk model, and the end of shielding

  1. 5 and 6th January 2021

    Shielding advice reissued for the third national lockdown

    Following the announcement of a further lockdown for England on 5th January, guidance advising Clinically Extremely Vulnerable people to shield was reissued on 6th January 2021.[21]

  2. 13th January 2021

    Vaccines delivery plan sets the first target

    The government's delivery plan made its top priority offering a first dose to everyone in groups 1 to 4 by 15th February, and said it would likely take until spring to work through all nine groups.[22]

  3. From 15th February 2021

    Vaccination of priority group 6 begins

    GPs began vaccinating group 6 from the week of 15th February, the date by which everyone in the first four groups was due to have been offered a first dose. Group 6 covered adults under 65 with conditions including chronic respiratory, heart, kidney and liver disease, diabetes, neurological conditions, cancer and weakened immunity, and some adult carers.[23][24]

  4. 16th February 2021

    QCovid risk assessment adds people to the shielding list

    The government announced that a risk model developed by the University of Oxford would identify further adults at high risk; the government said up to 1.7 million people were identified, and the ONS reported an additional 1.5 million in England, taking the England total to 3.8 million.[25][21]

  5. 1st April 2021

    Advice to shield paused

    From 1st April 2021 the advice to shield was paused in England.[26]

  6. 12th May 2021

    Public inquiry into the pandemic announced

    Prime Minister Boris Johnson announced an independent public inquiry into the UK's response to the pandemic.[27]

  7. 17th May and 19th July 2021

    Face coverings removed from schools, then from the law

    From 17th May 2021 pupils and staff were no longer advised to wear face coverings in classrooms. On 19th July 2021 the legal requirement to wear them in England ended, with no replacement duty on businesses or transport operators.[28][13]

  8. 1st September 2021

    JCVI advises a third primary dose for people who are severely immunosuppressed

    The JCVI advised a third primary vaccine dose for people over 12 who were severely immunosuppressed at the time of their first two doses, noting that around 40 per cent showed low antibody levels after two doses.[29]

  9. 15th September 2021

    Shielding programme ends

    The shielding programme ended in England. A letter dated 17th September 2021 told people they would not be advised to shield in future and that no specific national guidance would be provided for them.[26][30]

  10. 1st October 2021

    UK Health Security Agency launches

    UKHSA formed from Public Health England, NHS Test and Trace and the Joint Biosecurity Centre, and took over health protection responsibilities including guidance on respiratory infections.[31]

  11. December 2021

    Face coverings return under Plan B

    The government reintroduced a legal requirement to wear face coverings in shops and on public transport in England in response to the Omicron variant.[32]

  12. December 2021

    Baroness Hallett appointed to chair the Inquiry

    Retired judge Baroness Heather Hallett was appointed chair of the Covid-19 Inquiry.[27]

  13. 16th December 2021

    Treatments for people at highest risk become available in the community

    Under an interim commissioning policy announced on 8th December, neutralising monoclonal antibodies and antivirals became available from 16th December 2021 to people at greatest risk, including people who are immunocompromised, have cancer or have Down's syndrome.[33]

Chapter Four

2022 to 2023: 'living with Covid' and the prophylaxis question

A gloved hand holding a dropper over a Covid-19 lateral flow test.
Photo: The Independent, April 2023 You may have forgotten about Covid – but clinically vulnerable people don’t have that luxury
  1. 27th January 2022

    Plan B ends and the legal requirement to wear face coverings lapses

    The 2021 regulations expired. There has been no legal requirement to wear a face covering anywhere in England since.[32]

  2. 21st February 2022

    'Living with Covid-19' plan published

    The plan set out the end of legal self-isolation requirements from 24th February and of universal free testing from 1st April 2022, while stating that protection for the most vulnerable would continue through vaccination and targeted testing, with limited symptomatic testing for at-risk groups.[34]

  3. 17th March 2022

    Evusheld authorised by the MHRA

    The UK medicines regulator authorised tixagevimab plus cilgavimab (Evusheld) as pre-exposure prophylaxis against Covid-19.[35]

  4. 30th May and 24th August 2022

    RAPID C-19 group advises against patient access to Evusheld

    The group advised the Chief Medical Officer that there was no certainty the treatment would prevent symptomatic illness caused by Omicron variants in the vulnerable population, and on 24th August maintained that recommendation.[35]

  5. 1st June 2022

    Universal masking in healthcare settings stepped down

    NHS England and UKHSA ended the routine requirement for staff, patients and visitors without symptoms to wear masks in health and care settings in England, keeping them for Covid and respiratory pathways, outbreaks and symptomatic patients.[36]

  6. 28th June 2022

    UK Covid-19 Inquiry formally begins

    The Inquiry formally began with the publication of its terms of reference.[27]

  7. 2nd March 2023

    CVF asks for interim Inquiry reports

    At a preliminary hearing for Module 3 (healthcare), CVF asked for interim reports to be published rather than waiting for a single final report, because of the ongoing risks to Clinically Vulnerable people. The Inquiry agreed, and has since published its findings module by module.[37]

  8. 5th May 2023

    NICE final draft guidance does not recommend Evusheld

    NICE published final draft guidance on tixagevimab plus cilgavimab for preventing Covid-19. Its published recommendation is that the treatment is not recommended for adults unlikely to respond adequately to vaccination, or for whom vaccination is contraindicated.[38][39]

  9. 1st September 2023

    Shingles vaccine for severely immunosuppressed adults

    The NHS began offering the Shingrix vaccine to severely immunosuppressed people aged 50 and over, with no upper age limit, and made them the first priority for the programme.[62]

Chapter Five

2024 to 2025: Inquiry reports begin and vaccine eligibility narrows

Campaigners wearing masks hold a banner reading "Clinical vulnerability is an equality issue".
Photo: LBC, September 2024 Airborne transmission: A hidden threat that must be addressed
  1. 18th July 2024

    Module 1 report published; CVF responds

    The Inquiry's first report, on resilience and preparedness, was published on 18th July 2024. CVF said it had missed issues faced by Clinically Vulnerable families, including tailored guidance, PPE for home use and mental health support.[40][41]

  2. 2nd August 2024

    JCVI advice for autumn 2024

    Eligibility was set as people aged 65 and over, care home residents for older adults, and people aged six months to 64 in a clinical risk group.[42]

  3. 2024

    CVF publishes its first Voting Accessibility Audit

    CVF's audit examined how the Electoral Commission's guidance was being implemented for Clinically Vulnerable voters. A follow-up audit was published in 2026.[43]

A masked campaigner at a march, beside a banner reading "Clinical vulnerability is an equality issue".
Covid booster eligibility narrowed for autumn 2025
  1. 14th November 2024

    JCVI advises narrower eligibility for autumn 2025 and spring 2026

    The JCVI advised offering vaccination only to adults aged 75 and over, care home residents for older adults, and people aged six months and over who are immunosuppressed. This removed two groups: all adults aged 65 to 74, and people under 65 in a clinical risk group who are not immunosuppressed.[44]

  2. 31st January 2025

    Module 4 closing statements delivered for CVF

    Adam Wagner, Hayley Douglas and Lameesa Iqbal represented Clinically Vulnerable Families, instructed by Slater and Gordon, at the closing statements for Module 4 (vaccines and therapeutics).[45]

  3. 16th July 2025

    JCVI keeps the same groups for autumn 2026 and spring 2027

    Advice for autumn 2026 and spring 2027 maintained eligibility for adults aged 75 and over, care home residents and immunosuppressed people aged six months and over.[46]

  4. October 2025

    CVF publishes a report on children and young people

    The report highlights school attendance and deregistration issues faced by Clinically Vulnerable children.[43]

  5. 27th October 2025

    Awaab's Law comes into force

    Social landlords in England must now investigate and fix dangerous damp and mould within set deadlines. The law is named after two-year-old Awaab Ishak, who died in December 2020 from prolonged exposure to mould in his family's flat in Rochdale.[63]

  6. 20th November 2025

    Modules 2, 2A, 2B and 2C report published

    The Inquiry published its report on core decision-making and political governance.[40]

Chapter Six

The Inquiry reports, 2026

A group of campaigners wearing masks and holding placards and a banner.
Photo: Netpol, September 2026 What Happened to Medical Masks? From a Public Health Protection to a Public Order Issue
  1. February 2026

    CVF Impact on Society report submitted to the Inquiry

    CVF's report, based on national survey data and case studies, was published alongside the Inquiry's Impact on Society hearings.[43]

  2. 19th March 2026

    Module 3 report on healthcare published

    The Inquiry published its report on the impact of the pandemic on the UK's healthcare systems. CVF, a Core Participant, reported that the report criticised infection control policy, recommended prioritising HEPA filtration in NHS settings, said there was no good reason to prevent patients from wearing face masks, and documented DNACPR notices placed without consent.[40][47][5] Read our response →

  3. 16th April 2026

    Module 4 report on vaccines and therapeutics published

    CVF reported that the report states protecting immunocompromised people through prophylactics must become a priority, and that it found the children's vaccine rollout was too slow, too limited and too short.[40][48][49] Read our response →

  4. 29th June 2026

    Wearing a mask can now be an arrestable offence at protests

    Sections 157 to 159 of the Crime and Policing Act 2026, which received Royal Assent on 29th April 2026, came into force. An inspector or above can designate an area at a protest where wearing anything that conceals identity is an offence, punishable by up to a month in prison or a fine of up to £1,000. A defence exists for covering the face for health, religious or work reasons, but Liberty notes it applies only after arrest or when a charging decision is made.[50][51][52]

  5. 14th July 2026

    Module 5 report on procurement published

    The Inquiry published its report on procurement and distribution of key healthcare equipment, including PPE, ventilators and oxygen.[40]

  6. 16th July 2026

    JCVI advises raising the age threshold to 80 for autumn 2027

    For autumn 2027 the JCVI advised offering vaccination to adults aged 80 and over, care home residents for older adults, and immunosuppressed people aged six months and over. This would remove adults aged 75 to 79.[53]

  7. 14th September 2026

    UK government responds to the Module 3 report

    The government response covers infection prevention and control governance, workforce, surge planning and advance care planning, and says data systems should be improved to identify people at high risk in a future pandemic.[54]

  8. 24th September 2026

    CVF responds to NICE's review of Covid antiviral guidance

    NICE proposed withdrawing its guidance on the antivirals Paxlovid, molnupiravir (Lagevrio) and remdesivir (Veklury), and with it the requirement for the NHS in England to fund them. As a registered stakeholder, CVF found that NICE's evidence review had missed a major 2026 study of more than 10 million patients, which found Paxlovid still cut hospital admissions by almost half and deaths by more than two-thirds.[56] Its higher-risk group also covered conditions beyond NICE's current list: diabetes, asthma, COPD, high blood pressure, heart disease, chronic kidney disease, chronic liver disease and cancer. CVF asked NICE to reconsider the groups it removed in May 2025 too. CVF also argued that lower Covid rates across the population do not lower the risk for the people still eligible, that a lack of new trials is not evidence the medicines no longer work, and that each medicine should be judged on its own evidence.[55]

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If you spot an error or a missing milestone, please tell us through the contact page. Last reviewed: 30th September 2026.