Three quarters of people infected with Covid-19 in the UK were asymptomatic on the day they were tested, and more than 86 per cent had none of the main signs of infection, researchers say.
A study analysed data collected from more than 36,000 people in the three months from April to June.
Of those, 115 returned positive tests, 27, or 23.5 per cent, of whom were symptomatic, with 88, or 76.5 per cent, reporting no signs of illness at all.
The vast majority of those infected, 86.1 per cent, had none of the main symptoms, such as a cough, fever or loss of taste or smell when they were tested.
A more widespread testing programme is necessary to capture 'silent' transmission and potentially prevent and reduce future outbreaks
The survey was based on data collected by the Office for National Statistics.
It routinely tests people in households across the country to check for the prevalence of the disease.
The authors of the University College London study said Covid-19 said the data suggested symptoms are “poor markers” of the disease.
"Thus, 76.5 per cent of this random sample who tested positive reported no symptoms, and 86.1 per cent reported none of those specific to Covid-19," wrote the authors in the journal Clinical Epidemiology.
“A more widespread testing programme is necessary to capture ‘silent’ transmission and potentially prevent and reduce future outbreaks.”
However, it is not known how many of those people were pre-symptomatic, as opposed to asymptomatic.
Some people who have no signs of the disease when they are tested later go on to develop symptoms.
In a study published in JAMA of 303 confirmed Covid-19 patients in South Korea in March, 110, or 36.3 per cent, were asymptomatic at the time of their isolation.
But 21 of them, 19.1 per cent, eventually went on to develop symptoms of the disease.
“The median interval of time from detection of SARS-CoV-2 to symptom onset in pre-symptomatic patients was 15 (13-20) days,” wrote the study authors.
Irene Petersen, who was an author on the study and professor of epidemiology and health informatics, told The Guardian while people may have gone on to develop symptoms, silent transmission was a risk.
“At the moment, the focus is on people who have symptoms, but if you are not catching all those who are asymptomatic or presymptomatic it may be really difficult to get outbreaks down in time, before they get out of control,” she said.
Experts estimate the true prevalence of asymptomatic Covid-19 infections to be around 40 per cent.
Last week, UCL researchers said loss of smell was a “highly specific” symptom of the virus, which may be a more reliable indicator than a cough or fever.
Researchers at the university polled 590 people who lost their sense of taste or smell earlier in the year.
Of those surveyed, 80 per cent had coronavirus antibodies, suggesting a previous infection.
Up to 40 per cent of the group did not report suffering from a cough or fever.
The biog
Simon Nadim has completed 7,000 dives.
The hardest dive in the UAE is the German U-boat 110m down off the Fujairah coast.
As a child, he loved the documentaries of Jacques Cousteau
He also led a team that discovered the long-lost portion of the Ines oil tanker.
If you are interested in diving, he runs the XR Hub Dive Centre in Fujairah
CONFIRMED%20LINE-UP
%3Cp%3EElena%20Rybakina%20(Kazakhstan)%0D%3Cbr%3EOns%20Jabeur%20(Tunisia)%0D%3Cbr%3EMaria%20Sakkari%20(Greece)%0D%3Cbr%3EBarbora%20Krej%C4%8D%C3%ADkov%C3%A1%20(Czech%20Republic)%0D%3Cbr%3EBeatriz%20Haddad%20Maia%20(Brazil)%0D%3Cbr%3EJe%C4%BCena%20Ostapenko%20(Latvia)%0D%3Cbr%3ELiudmila%20Samsonova%0D%3Cbr%3EDaria%20Kasatkina%E2%80%AF%0D%3Cbr%3EVeronika%20Kudermetova%E2%80%AF%0D%3Cbr%3ECaroline%20Garcia%20(France)%E2%80%AF%0D%3Cbr%3EMagda%20Linette%20(Poland)%E2%80%AF%0D%3Cbr%3ESorana%20C%C3%AErstea%20(Romania)%E2%80%AF%0D%3Cbr%3EAnastasia%20Potapova%E2%80%AF%0D%3Cbr%3EAnhelina%20Kalinina%20(Ukraine)%E2%80%AF%E2%80%AF%0D%3Cbr%3EJasmine%20Paolini%20(Italy)%E2%80%AF%0D%3Cbr%3EEmma%20Navarro%20(USA)%E2%80%AF%0D%3Cbr%3ELesia%20Tsurenko%20(Ukraine)%0D%3Cbr%3ENaomi%20Osaka%20(Japan)%20-%20wildcard%0D%3Cbr%3EEmma%20Raducanu%20(Great%20Britain)%20-%20wildcard%3Cbr%3EAlexandra%20Eala%20(Philippines)%20-%20wildcard%3C%2Fp%3E%0A
How to apply for a drone permit
- Individuals must register on UAE Drone app or website using their UAE Pass
- Add all their personal details, including name, nationality, passport number, Emiratis ID, email and phone number
- Upload the training certificate from a centre accredited by the GCAA
- Submit their request
What are the regulations?
- Fly it within visual line of sight
- Never over populated areas
- Ensure maximum flying height of 400 feet (122 metres) above ground level is not crossed
- Users must avoid flying over restricted areas listed on the UAE Drone app
- Only fly the drone during the day, and never at night
- Should have a live feed of the drone flight
- Drones must weigh 5 kg or less
Key findings of Jenkins report
- Founder of the Muslim Brotherhood, Hassan al Banna, "accepted the political utility of violence"
- Views of key Muslim Brotherhood ideologue, Sayyid Qutb, have “consistently been understood” as permitting “the use of extreme violence in the pursuit of the perfect Islamic society” and “never been institutionally disowned” by the movement.
- Muslim Brotherhood at all levels has repeatedly defended Hamas attacks against Israel, including the use of suicide bombers and the killing of civilians.
- Laying out the report in the House of Commons, David Cameron told MPs: "The main findings of the review support the conclusion that membership of, association with, or influence by the Muslim Brotherhood should be considered as a possible indicator of extremism."
if you go
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)
PREMIER LEAGUE FIXTURES
Saturday (UAE kick-off times)
Watford v Leicester City (3.30pm)
Brighton v Arsenal (6pm)
West Ham v Wolves (8.30pm)
Bournemouth v Crystal Palace (10.45pm)
Sunday
Newcastle United v Sheffield United (5pm)
Aston Villa v Chelsea (7.15pm)
Everton v Liverpool (10pm)
Monday
Manchester City v Burnley (11pm)
Essentials
The flights
Etihad and Emirates fly direct from the UAE to Delhi from about Dh950 return including taxes.
The hotels
Double rooms at Tijara Fort-Palace cost from 6,670 rupees (Dh377), including breakfast.
Doubles at Fort Bishangarh cost from 29,030 rupees (Dh1,641), including breakfast. Doubles at Narendra Bhawan cost from 15,360 rupees (Dh869). Doubles at Chanoud Garh cost from 19,840 rupees (Dh1,122), full board. Doubles at Fort Begu cost from 10,000 rupees (Dh565), including breakfast.
The tours
Amar Grover travelled with Wild Frontiers. A tailor-made, nine-day itinerary via New Delhi, with one night in Tijara and two nights in each of the remaining properties, including car/driver, costs from £1,445 (Dh6,968) per person.
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
RESULTS: 2018 WORLD CUP QUALIFYING - EUROPE
Albania 0 Italy 1
Finland 2 Turkey 2
Macedonia 4 Liechtenstein
Iceland 2 Kosovo 0
Israel 0 Spain 1
Moldova 0 Austria 1
Serbia 1 Georgia 0
Ukraine 0 Croatia 2
Wales 0 Ireland 1
The Bio
Favourite vegetable: “I really like the taste of the beetroot, the potatoes and the eggplant we are producing.”
Holiday destination: “I like Paris very much, it’s a city very close to my heart.”
Book: “Das Kapital, by Karl Marx. I am not a communist, but there are a lot of lessons for the capitalist system, if you let it get out of control, and humanity.”
Musician: “I like very much Fairuz, the Lebanese singer, and the other is Umm Kulthum. Fairuz is for listening to in the morning, Umm Kulthum for the night.”
The specs
Engine: 3.0-litre six-cylinder turbo
Power: 398hp from 5,250rpm
Torque: 580Nm at 1,900-4,800rpm
Transmission: Eight-speed auto
Fuel economy, combined: 6.5L/100km
On sale: December
Price: From Dh330,000 (estimate)
RESULTS
Catchweight 82kg
Piotr Kuberski (POL) beat Ahmed Saeb (IRQ) by decision.
Women’s bantamweight
Corinne Laframboise (CAN) beat Cornelia Holm (SWE) by unanimous decision.
Welterweight
Omar Hussein (PAL) beat Vitalii Stoian (UKR) by unanimous decision.
Welterweight
Josh Togo (LEB) beat Ali Dyusenov (UZB) by unanimous decision.
Flyweight
Isaac Pimentel (BRA) beat Delfin Nawen (PHI) TKO round-3.
Catchweight 80kg
Seb Eubank (GBR) beat Emad Hanbali (SYR) KO round 1.
Lightweight
Mohammad Yahya (UAE) beat Ramadan Noaman (EGY) TKO round 2.
Lightweight
Alan Omer (GER) beat Reydon Romero (PHI) submission 1.
Welterweight
Juho Valamaa (FIN) beat Ahmed Labban (LEB) by unanimous decision.
Featherweight
Elias Boudegzdame (ALG) beat Austin Arnett (USA) by unanimous decision.
Super heavyweight
Maciej Sosnowski (POL) beat Ibrahim El Sawi (EGY) by submission round 1.
How to wear a kandura
Dos
- Wear the right fabric for the right season and occasion
- Always ask for the dress code if you don’t know
- Wear a white kandura, white ghutra / shemagh (headwear) and black shoes for work
- Wear 100 per cent cotton under the kandura as most fabrics are polyester
Don’ts
- Wear hamdania for work, always wear a ghutra and agal
- Buy a kandura only based on how it feels; ask questions about the fabric and understand what you are buying
The specs
Engine: 4.0-litre V8 twin-turbocharged and three electric motors
Power: Combined output 920hp
Torque: 730Nm at 4,000-7,000rpm
Transmission: 8-speed dual-clutch automatic
Fuel consumption: 11.2L/100km
On sale: Now, deliveries expected later in 2025
Price: expected to start at Dh1,432,000
EA Sports FC 26
Publisher: EA Sports
Consoles: PC, PlayStation 4/5, Xbox Series X/S
Rating: 3/5
UAE squad
Esha Oza (captain), Al Maseera Jahangir, Emily Thomas, Heena Hotchandani, Indhuja Nandakumar, Katie Thompson, Lavanya Keny, Mehak Thakur, Michelle Botha, Rinitha Rajith, Samaira Dharnidharka, Siya Gokhale, Sashikala Silva, Suraksha Kotte, Theertha Satish (wicketkeeper) Udeni Kuruppuarachchige, Vaishnave Mahesh.
UAE tour of Zimbabwe
All matches in Bulawayo
Friday, Sept 26 – First ODI
Sunday, Sept 28 – Second ODI
Tuesday, Sept 30 – Third ODI
Thursday, Oct 2 – Fourth ODI
Sunday, Oct 5 – First T20I
Monday, Oct 6 – Second T20I
