A booster shot is the most effective protection against Covid-19 for those who have taken two shots of the Sinopharm vaccine, doctors said at the Arab Health trade exhibition in Dubai.
Dr Gehad ElGhazali, lead immunologist at the government-run Sheikh Khalifa Medical City in Abu Dhabi, reported a "very strong" response in the body's immune system once a double dose of the Sinopharm vaccine was topped up with a booster shot of the Pfizer-BioNTech vaccine.
Although we see antibodies in those who have had the virus, we still do not know how long they may last for
In Abu Dhabi, the Department of Health is also offering a third dose of the Sinopharm vaccine for those who had a second dose six months ago.
Dr ElGhazali said immunity began to drop six months after a second dose of the Sinopharm shot was administered, but a booster was safe and effective in tests.
“We have seen a very strong immune response when a third booster of Pfizer has been administered following two doses of Sinopharm,” he said.
“When there is natural infection from the virus, we see an immune response after about three weeks, and we see a similar response following a second vaccine dose.”
Research around the world is under way to determine how effective mixing vaccines is in offering greater protection against new variants of Covid-19.
A recent German study looked at subjects receiving one dose of the Oxford-AstraZeneca vaccine, followed eight weeks later by a dose of the Pfizer-BioNTech shot.
Blood samples showed that protection in people given two different vaccines was four times higher than in those who received two doses of the Pfizer shot.
The focus on long-term immunity
Mixing vaccines could provide more options to health authorities treating more vulnerable patients.
"From the beginning, we have observed variance in the immune response," Dr ElGhazali said.
“Those patients with defective T cells or some kind of anaemia have a worse response to the virus.”
T cells aid the body’s production of antibodies to kill off cells infected by the virus.
Covid-19 infections can cause lymphopenia, a disorder that damages T cells and other white blood cells, and is more pronounced in severely ill patients.
Studies have shown the majority of people infected with Covid-19 develop a strong T-cell response, which bodes well for potential long-term immunity against the virus – but that is far from certain.
"Given the nature of this virus, there will be a Sars-CoV 3 and 4, and we just hope it will not pose an existential threat to humans," said Prof Basel Al Ramadi, chairman of medical microbiology at UAE University in Al Ain.
“We only have a few vaccines now, but there are more than 280 under development.
“Most are injectable but a minority are taken orally.
“Ideally we want memory T cells from these vaccines that can control the infection.”
A Phase 3 trial of 1,000 patients in the UAE who had the Sputnik V vaccine will assess the presence of antibodies and T cells four months after receiving the shot.
Prof Al Ramadi said asymptomatic or mild cases of the disease triggered a stronger T-cell response in patients when compared with those with moderate or severe symptoms.
A scarcity of T cells was also reported in older people and those who became ill with Covid-19.
"Although we see antibodies in those who have had the virus, we still do not know for how long they may last," Prof Al Ramadi said.
Children receive Covid-19 vaccine – in pictures
How does ToTok work?
The calling app is available to download on Google Play and Apple App Store
To successfully install ToTok, users are asked to enter their phone number and then create a nickname.
The app then gives users the option add their existing phone contacts, allowing them to immediately contact people also using the application by video or voice call or via message.
Users can also invite other contacts to download ToTok to allow them to make contact through the app.
SPEC%20SHEET%3A%20SAMSUNG%20GALAXY%20Z%20FLIP5
%3Cp%3E%3Cstrong%3EDisplay%3A%3C%2Fstrong%3E%20Main%20%E2%80%93%206.7%22%20FHD%2B%20Dynamic%20Amoled%202X%2C%202640%20x%201080%2C%2022%3A9%2C%20425ppi%2C%20HDR10%2B%2C%20up%20to%20120Hz%3B%20cover%20%E2%80%93%203%2F4%22%20Super%20Amoled%2C%20720%20x%20748%2C%20306ppi%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EProcessor%3A%3C%2Fstrong%3E%20Qualcomm%20Snapdragon%208%20Gen%202%2C%204nm%2C%20octa-core%3B%20Adreno%20740%20GPU%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EMemory%3A%3C%2Fstrong%3E%208GB%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3ECapacity%3A%3C%2Fstrong%3E%20256%2F512GB%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EPlatform%3A%3C%2Fstrong%3E%20Android%2013%2C%20One%20UI%205.1.1%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EMain%20camera%3A%3C%2Fstrong%3E%20Dual%2012MP%20ultra-wide%20(f%2F2.2)%20%2B%2012MP%20wide%20(f%2F1.8)%2C%20OIS%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EVideo%3A%3C%2Fstrong%3E%204K%4030%2F60fps%2C%20full-HD%4060%2F240fps%2C%20HD%40960fps%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EFront%20camera%3A%3C%2Fstrong%3E%2010MP%20(f%2F2.2)%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EBattery%3A%3C%2Fstrong%3E%203700mAh%2C%2025W%20fast%20charging%2C%2015W%20wireless%2C%204.5W%20reverse%20wireless%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EConnectivity%3A%3C%2Fstrong%3E%205G%3B%20Wi-Fi%2C%20Bluetooth%205.3%2C%20NFC%20(Samsung%20Pay)%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EI%2FO%3A%3C%2Fstrong%3E%20USB-C%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3ECards%3A%3C%2Fstrong%3E%20Nano-SIM%20%2B%20eSIM%3B%20no%20microSD%20slot%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EColours%3A%3C%2Fstrong%3E%20Cream%2C%20graphite%2C%20lavender%2C%20mint%3B%20Samsung.com%20exclusives%20%E2%80%93%20blue%2C%20grey%2C%20green%2C%20yellow%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EIn%20the%20box%3A%3C%2Fstrong%3E%20Flip%204%2C%20USB-C-to-USB-C%20cable%3C%2Fp%3E%0A%3Cp%3E%3Cstrong%3EPrice%3A%3C%2Fstrong%3E%20Dh3%2C899%20%2F%20Dh4%2C349%3C%2Fp%3E%0A
Key facilities
- Olympic-size swimming pool with a split bulkhead for multi-use configurations, including water polo and 50m/25m training lanes
- Premier League-standard football pitch
- 400m Olympic running track
- NBA-spec basketball court with auditorium
- 600-seat auditorium
- Spaces for historical and cultural exploration
- An elevated football field that doubles as a helipad
- Specialist robotics and science laboratories
- AR and VR-enabled learning centres
- Disruption Lab and Research Centre for developing entrepreneurial skills
The specs: Aston Martin DB11 V8 vs Ferrari GTC4Lusso T
Price, base: Dh840,000; Dh120,000
Engine: 4.0L V8 twin-turbo; 3.9L V8 turbo
Transmission: Eight-speed automatic; seven-speed automatic
Power: 509hp @ 6,000rpm; 601hp @ 7,500rpm
Torque: 695Nm @ 2,000rpm; 760Nm @ 3,000rpm
Fuel economy, combined: 9.9L / 100km; 11.6L / 100km
How to vote in the UAE
1) Download your ballot https://www.fvap.gov/
2) Take it to the US Embassy
3) Deadline is October 15
4) The embassy will ensure all ballots reach the US in time for the November 3 poll
Benefits of first-time home buyers' scheme
- Priority access to new homes from participating developers
- Discounts on sales price of off-plan units
- Flexible payment plans from developers
- Mortgages with better interest rates, faster approval times and reduced fees
- DLD registration fee can be paid through banks or credit cards at zero interest rates
The years Ramadan fell in May
Thor: Ragnarok
Dir: Taika Waititi
Starring: Chris Hemsworth, Tom Hiddleston, Cate Blanchett, Jeff Goldblum, Mark Ruffalo, Tessa Thompson
Four stars
Volvo ES90 Specs
Engine: Electric single motor (96kW), twin motor (106kW) and twin motor performance (106kW)
Power: 333hp, 449hp, 680hp
Torque: 480Nm, 670Nm, 870Nm
On sale: Later in 2025 or early 2026, depending on region
Price: Exact regional pricing TBA
Graduated from the American University of Sharjah
She is the eldest of three brothers and two sisters
Has helped solve 15 cases of electric shocks
Enjoys travelling, reading and horse riding
UK-EU trade at a glance
EU fishing vessels guaranteed access to UK waters for 12 years
Co-operation on security initiatives and procurement of defence products
Youth experience scheme to work, study or volunteer in UK and EU countries
Smoother border management with use of e-gates
Cutting red tape on import and export of food
The Year Earth Changed
Directed by:Tom Beard
Narrated by: Sir David Attenborough
Stars: 4
MATCH INFO
Fixture: Thailand v UAE, Tuesday, 4pm (UAE)
TV: Abu Dhabi Sports
Specs
%3Cp%3E%3Cstrong%3EEngine%3A%3C%2Fstrong%3E%201.5-litre%20turbo%204-cylinder%20%2F%202.0%20turbo%204-cylinder%20(S3)%0D%3Cbr%3E%3Cstrong%3EPower%3A%3C%2Fstrong%3E%20148bhp%20%2F%20328bhp%20(S3)%0D%3Cbr%3E%3Cstrong%3ETorque%3A%3C%2Fstrong%3E%20250Nm%20%2F%20420Nm%20(S3)%0D%3Cbr%3E%3Cstrong%3EOn%20sale%3A%3C%2Fstrong%3E%20December%0D%3Cbr%3E%3Cstrong%3EPrice%3A%3C%2Fstrong%3E%20TBA%0D%3C%2Fp%3E%0A
BIGGEST CYBER SECURITY INCIDENTS IN RECENT TIMES
SolarWinds supply chain attack: Came to light in December 2020 but had taken root for several months, compromising major tech companies, governments and its entities
Microsoft Exchange server exploitation: March 2021; attackers used a vulnerability to steal emails
Kaseya attack: July 2021; ransomware hit perpetrated REvil, resulting in severe downtime for more than 1,000 companies
Log4j breach: December 2021; attackers exploited the Java-written code to inflitrate businesses and governments
How will Gen Alpha invest?
Mark Chahwan, co-founder and chief executive of robo-advisory firm Sarwa, forecasts that Generation Alpha (born between 2010 and 2024) will start investing in their teenage years and therefore benefit from compound interest.
“Technology and education should be the main drivers to make this happen, whether it’s investing in a few clicks or their schools/parents stepping up their personal finance education skills,” he adds.
Mr Chahwan says younger generations have a higher capacity to take on risk, but for some their appetite can be more cautious because they are investing for the first time. “Schools still do not teach personal finance and stock market investing, so a lot of the learning journey can feel daunting and intimidating,” he says.
He advises millennials to not always start with an aggressive portfolio even if they can afford to take risks. “We always advise to work your way up to your risk capacity, that way you experience volatility and get used to it. Given the higher risk capacity for the younger generations, stocks are a favourite,” says Mr Chahwan.
Highlighting the role technology has played in encouraging millennials and Gen Z to invest, he says: “They were often excluded, but with lower account minimums ... a customer with $1,000 [Dh3,672] in their account has their money working for them just as hard as the portfolio of a high get-worth individual.”
The alternatives
• Founded in 2014, Telr is a payment aggregator and gateway with an office in Silicon Oasis. It’s e-commerce entry plan costs Dh349 monthly (plus VAT). QR codes direct customers to an online payment page and merchants can generate payments through messaging apps.
• Business Bay’s Pallapay claims 40,000-plus active merchants who can invoice customers and receive payment by card. Fees range from 1.99 per cent plus Dh1 per transaction depending on payment method and location, such as online or via UAE mobile.
• Tap started in May 2013 in Kuwait, allowing Middle East businesses to bill, accept, receive and make payments online “easier, faster and smoother” via goSell and goCollect. It supports more than 10,000 merchants. Monthly fees range from US$65-100, plus card charges of 2.75-3.75 per cent and Dh1.2 per sale.
• 2checkout’s “all-in-one payment gateway and merchant account” accepts payments in 200-plus markets for 2.4-3.9 per cent, plus a Dh1.2-Dh1.8 currency conversion charge. The US provider processes online shop and mobile transactions and has 17,000-plus active digital commerce users.
• PayPal is probably the best-known online goods payment method - usually used for eBay purchases - but can be used to receive funds, providing everyone’s signed up. Costs from 2.9 per cent plus Dh1.2 per transaction.
More from Rashmee Roshan Lall
ATP WORLD No 1
2004 Roger Federer
2005 Roger Federer
2006 Roger Federer
2007 Roger Federer
2008 Rafael Nadal
2009 Roger Federer
2010 Rafael Nadal
2011 Novak Djokovic
2012 Novak Djokovic
2013 Rafael Nadal
2014 Novak Djokovic
2015 Novak Djokovic
2016 Andy Murray
2017 Rafael Nadal
2018 Novak Djokovic
2019 Rafael Nadal
Infiniti QX80 specs
Engine: twin-turbocharged 3.5-liter V6
Power: 450hp
Torque: 700Nm
Price: From Dh450,000, Autograph model from Dh510,000
Available: Now
