A single dose of a Covid-19 vaccine can cut the spread of the virus in households by up to half, a British study shows.
The Public Health England research offers insight into one of the big unknowns over Covid-19 vaccinations – the extent to which they prevent transmission of the coronavirus .
The results could strengthen the case for Prime Minister Boris Johnson's plans to end England's lockdown in June.
But scientists warned against making a "big mistake" by dropping Covid-19 restrictions too early based mainly on the success of vaccines, while former prime minister Tony Blair's think tank recommended inoculating adolescents and delaying the UK's final step out of lockdown until after summer.
People who received a first dose of vaccines developed by either AstraZeneca or Pfizer – and became infected three weeks later – were between 38 per cent and 49 per cent less likely to pass the disease on to those in their household compared with those who were unvaccinated.
The study showed a single shot could stop a vaccinated person developing symptomatic infection initially, and the risk reduced by 60 per cent to 65 per cent from four weeks after one dose of either vaccine.
Dr Mary Ramsay, head of immunisation at PHE, said the study showed vaccines were vital for “helping us return to a normal way of life”.
“Not only do vaccines reduce the severity of illness and prevent hundreds of deaths every day, we now see they also have an additional impact on reducing the chance of passing Covid-19 on to others,” she said.
Prof Peter Openshaw from Imperial College London said the study's results were "very reassuring" but warned the UK it could not rely solely on vaccines to reduce the spread of the virus.
"We mustn't drop our guard in the summer – we must use the summer to strengthen our precautions and to roll out vaccines into the groups which are most transmitting, which is younger people," he told the BBC Radio 4 Today programme on Wednesday.
"We’re doing the right thing by being cautious and not easing too fast. Easing too fast will be a big mistake, we don’t want to lose all the ground we’ve gained by massive public effort."
A new report from the Tony Blair Institute on Wednesday warned the UK's final lockdown easing on June 21 – when most social distancing restrictions are lifted –could overtake the vaccination schedule.
The think tank recommended delaying step four of the roadmap by a month to allow adolescents to be vaccinated.
In the US, people aged 16 and older are eligible for a vaccine but in the UK it is limited to over-18s.
"On its own, delaying step four could leave the country under-protected for a recurrence later in the year as the virus may spread more readily in winter," the institute said.
"Offering a vaccine to a further 6.8 per cent of the population could be critical in taking population protection levels over the winter herd immunity threshold, thereby preventing a further wave of infections in the new year."
Health Secretary Matt Hancock emphasised the importance of the vaccination programme while addressing the PHE study.
"We already know vaccines save lives and this study is the most comprehensive real-world data showing they also cut transmission of this deadly virus," he said.
The study included more than 57,000 contacts from 24,000 households in which there was a lab-confirmed case that had received a vaccination, researchers said, compared with nearly 1 million contacts of unvaccinated cases.
Britain's Covid-19 vaccination campaign is one of the world's fastest, with more than 33.8 million first doses given and a quarter of adults receiving two.
That has generated real-world data on how the Pfizer and AstraZeneca drugs work outside of clinical trials, and health officials said this month the distribution of vaccines had prevented more than 10,000 deaths of people aged 60 and older by the end of March.
Previous data that showed effectiveness of vaccines in older people helped to inform other countries that reversed age limits on AstraZeneca's shot.
The specs
Engine: 1.5-litre 4-cylinder petrol
Power: 154bhp
Torque: 250Nm
Transmission: 7-speed automatic with 8-speed sports option
Price: From Dh79,600
On sale: Now
MATCH INFO
Manchester United 1 (Greenwood 77')
Everton 1 (Lindelof 36' og)
Gothia Cup 2025
4,872 matches
1,942 teams
116 pitches
76 nations
26 UAE teams
15 Lebanese teams
2 Kuwaiti teams
Earth under attack: Cosmic impacts throughout history
- 4.5 billion years ago: Mars-sized object smashes into the newly-formed Earth, creating debris that coalesces to form the Moon
- 66 million years ago: 10km-wide asteroid crashes into the Gulf of Mexico, wiping out over 70 per cent of living species – including the dinosaurs.
- 50,000 years ago: 50m-wide iron meteor crashes in Arizona with the violence of 10 megatonne hydrogen bomb, creating the famous 1.2km-wide Barringer Crater
- 1490: Meteor storm over Shansi Province, north-east China when large stones “fell like rain”, reportedly leading to thousands of deaths.
- 1908: 100-metre meteor from the Taurid Complex explodes near the Tunguska river in Siberia with the force of 1,000 Hiroshima-type bombs, devastating 2,000 square kilometres of forest.
- 1998: Comet Shoemaker-Levy 9 breaks apart and crashes into Jupiter in series of impacts that would have annihilated life on Earth.
-2013: 10,000-tonne meteor burns up over the southern Urals region of Russia, releasing a pressure blast and flash that left over 1600 people injured.
ORDER OF PLAY ON SHOW COURTS
Centre Court - 4pm (UAE)
Gael Monfils (15) v Kyle Edmund
Karolina Pliskova (3) v Magdalena Rybarikova
Dusan Lajovic v Roger Federer (3)
Court 1 - 4pm
Adam Pavlasek v Novak Djokovic (2)
Dominic Thiem (8) v Gilles Simon
Angelique Kerber (1) v Kirsten Flipkens
Court 2 - 2.30pm
Grigor Dimitrov (13) v Marcos Baghdatis
Agnieszka Radwanska (9) v Christina McHale
Milos Raonic (6) v Mikhail Youzhny
Tsvetana Pironkova v Caroline Wozniacki (5)
Match info:
Real Betis v Sevilla, 10.45pm (UAE)
Recent winners
2002 Giselle Khoury (Colombia)
2004 Nathalie Nasralla (France)
2005 Catherine Abboud (Oceania)
2007 Grace Bijjani (Mexico)
2008 Carina El-Keddissi (Brazil)
2009 Sara Mansour (Brazil)
2010 Daniella Rahme (Australia)
2011 Maria Farah (Canada)
2012 Cynthia Moukarzel (Kuwait)
2013 Layla Yarak (Australia)
2014 Lia Saad (UAE)
2015 Cynthia Farah (Australia)
2016 Yosmely Massaad (Venezuela)
2017 Dima Safi (Ivory Coast)
2018 Rachel Younan (Australia)
How to avoid crypto fraud
- Use unique usernames and passwords while enabling multi-factor authentication.
- Use an offline private key, a physical device that requires manual activation, whenever you access your wallet.
- Avoid suspicious social media ads promoting fraudulent schemes.
- Only invest in crypto projects that you fully understand.
- Critically assess whether a project’s promises or returns seem too good to be true.
- Only use reputable platforms that have a track record of strong regulatory compliance.
- Store funds in hardware wallets as opposed to online exchanges.
Dates for the diary
To mark Bodytree’s 10th anniversary, the coming season will be filled with celebratory activities:
- September 21 Anyone interested in becoming a certified yoga instructor can sign up for a 250-hour course in Yoga Teacher Training with Jacquelene Sadek. It begins on September 21 and will take place over the course of six weekends.
- October 18 to 21 International yoga instructor, Yogi Nora, will be visiting Bodytree and offering classes.
- October 26 to November 4 International pilates instructor Courtney Miller will be on hand at the studio, offering classes.
- November 9 Bodytree is hosting a party to celebrate turning 10, and everyone is invited. Expect a day full of free classes on the grounds of the studio.
- December 11 Yogeswari, an advanced certified Jivamukti teacher, will be visiting the studio.
- February 2, 2018 Bodytree will host its 4th annual yoga market.
2025 Fifa Club World Cup groups
Group A: Palmeiras, Porto, Al Ahly, Inter Miami.
Group B: Paris Saint-Germain, Atletico Madrid, Botafogo, Seattle.
Group C: Bayern Munich, Auckland City, Boca Juniors, Benfica.
Group D: Flamengo, ES Tunis, Chelsea, Leon.
Group E: River Plate, Urawa, Monterrey, Inter Milan.
Group F: Fluminense, Borussia Dortmund, Ulsan, Mamelodi Sundowns.
Group G: Manchester City, Wydad, Al Ain, Juventus.
Group H: Real Madrid, Al Hilal, Pachuca, Salzburg.
Top 10 most polluted cities
- Bhiwadi, India
- Ghaziabad, India
- Hotan, China
- Delhi, India
- Jaunpur, India
- Faisalabad, Pakistan
- Noida, India
- Bahawalpur, Pakistan
- Peshawar, Pakistan
- Bagpat, India
The burning issue
The internal combustion engine is facing a watershed moment – major manufacturer Volvo is to stop producing petroleum-powered vehicles by 2021 and countries in Europe, including the UK, have vowed to ban their sale before 2040. The National takes a look at the story of one of the most successful technologies of the last 100 years and how it has impacted life in the UAE.
Read part four: an affection for classic cars lives on
Read part three: the age of the electric vehicle begins
Read part one: how cars came to the UAE
F1 The Movie
Starring: Brad Pitt, Damson Idris, Kerry Condon, Javier Bardem
Director: Joseph Kosinski
Rating: 4/5
UAE currency: the story behind the money in your pockets
Sholto Byrnes on Myanmar politics
Key figures in the life of the fort
Sheikh Dhiyab bin Isa (ruled 1761-1793) Built Qasr Al Hosn as a watchtower to guard over the only freshwater well on Abu Dhabi island.
Sheikh Shakhbut bin Dhiyab (ruled 1793-1816) Expanded the tower into a small fort and transferred his ruling place of residence from Liwa Oasis to the fort on the island.
Sheikh Tahnoon bin Shakhbut (ruled 1818-1833) Expanded Qasr Al Hosn further as Abu Dhabi grew from a small village of palm huts to a town of more than 5,000 inhabitants.
Sheikh Khalifa bin Shakhbut (ruled 1833-1845) Repaired and fortified the fort.
Sheikh Saeed bin Tahnoon (ruled 1845-1855) Turned Qasr Al Hosn into a strong two-storied structure.
Sheikh Zayed bin Khalifa (ruled 1855-1909) Expanded Qasr Al Hosn further to reflect the emirate's increasing prominence.
Sheikh Shakhbut bin Sultan (ruled 1928-1966) Renovated and enlarged Qasr Al Hosn, adding a decorative arch and two new villas.
Sheikh Zayed bin Sultan (ruled 1966-2004) Moved the royal residence to Al Manhal palace and kept his diwan at Qasr Al Hosn.
Sources: Jayanti Maitra, www.adach.ae
House-hunting
Top 10 locations for inquiries from US house hunters, according to Rightmove
- Edinburgh, Scotland
- Westminster, London
- Camden, London
- Glasgow, Scotland
- Islington, London
- Kensington and Chelsea, London
- Highlands, Scotland
- Argyll and Bute, Scotland
- Fife, Scotland
- Tower Hamlets, London
ADCC AFC Women’s Champions League Group A fixtures
October 3: v Wuhan Jiangda Women’s FC
October 6: v Hyundai Steel Red Angels Women’s FC
October 9: v Sabah FA
Red Joan
Director: Trevor Nunn
Starring: Judi Dench, Sophie Cookson, Tereza Srbova
Rating: 3/5 stars
Boulder shooting victims
• Denny Strong, 20
• Neven Stanisic, 23
• Rikki Olds, 25
• Tralona Bartkowiak, 49
• Suzanne Fountain, 59
• Teri Leiker, 51
• Eric Talley, 51
• Kevin Mahoney, 61
• Lynn Murray, 62
• Jody Waters, 65
How%20to%20avoid%20getting%20scammed
%3Cul%3E%0A%3Cli%3ENever%20click%20on%20links%20provided%20via%20app%20or%20SMS%2C%20even%20if%20they%20seem%20to%20come%20from%20authorised%20senders%20at%20first%20glance%3C%2Fli%3E%0A%3Cli%3EAlways%20double-check%20the%20authenticity%20of%20websites%3C%2Fli%3E%0A%3Cli%3EEnable%20Two-Factor%20Authentication%20(2FA)%20for%20all%20your%20working%20and%20personal%20services%3C%2Fli%3E%0A%3Cli%3EOnly%20use%20official%20links%20published%20by%20the%20respective%20entity%3C%2Fli%3E%0A%3Cli%3EDouble-check%20the%20web%20addresses%20to%20reduce%20exposure%20to%20fake%20sites%20created%20with%20domain%20names%20containing%20spelling%20errors%3C%2Fli%3E%0A%3C%2Ful%3E%0A
Electric scooters: some rules to remember
- Riders must be 14-years-old or over
- Wear a protective helmet
- Park the electric scooter in designated parking lots (if any)
- Do not leave electric scooter in locations that obstruct traffic or pedestrians
- Solo riders only, no passengers allowed
- Do not drive outside designated lanes
