AstraZeneca’s Covid vaccine: should you be worried about side effects?


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Several European countries suspended use of the AstraZeneca-Oxford Covid-19 vaccine.

Temporary bans were put in place after a small number of people who received the drug suffered blood clots.

We look at the key questions surrounding the situation.

Should people be worried about taking AstraZeneca’s vaccine?

No. Many scientists criticised European countries for acting too hastily in suspending the vaccine while the pandemic is ongoing.

Health experts said the number of blood clots reported in vaccinated people is no higher than in the general population, and that there is no evidence to link the vaccine directly to blood clotting.

“I think it is very clear that the benefits of being vaccinated at the moment … outweigh the possible concern over this rather rare type of blood clot,” Prof Peter Openshaw from Imperial College London told the BBC.

“It really is a completely one-sided argument statistically that we need to be vaccinating.”

Dr Simon Clarke, a microbiologist at the University of Reading, said it was reckless to stop using the vaccine.

“I keep hearing the phrase 'abundance of caution' being used in reference to countries pausing rollout of the Oxford vaccine, but is it really caution?” he said.

Prof Stephen Evans from the London School of Hygiene and Tropical Medicine said some European countries were taking a “super-cautious approach based on some isolated reports”.

"The problem with spontaneous reports of suspected adverse reactions to a vaccine is the enormous difficulty of distinguishing a causal effect from a coincidence," he said.

Why did European countries suspend AstraZeneca’s vaccine?

A small number of blood-clotting incidents were reported in people who had received the vaccine made by AstraZeneca-Oxford.

Austria suspended a batch of the drug on March 9 while authorities investigated a death from a pulmonary embolism, an acute lung disease caused by a dislodged blood clot.

A notice of suspension for AstraZeneca's Covid-19 vaccine in Rome. EPA
A notice of suspension for AstraZeneca's Covid-19 vaccine in Rome. EPA

Denmark was next after a 60-year-old woman died from a blood clot after she was given a dose of AstraZeneca's Covid vaccine from the same batch used in Austria.

Deaths from blood clots were also reported in Norway and Italy.

The medicines regulator said there were 30 cases of "thromboembolic events" among five million people in Europe who had received at least one dose of the vaccine.

French immunologist Alain Fischer, who heads a vaccination advisory board, said the cases caused alarm.

"There were a few very unusual and troubling cases which justify this pause and the analysis," Prof Fischer told France Inter radio.

"It's not lost time."

Which European countries suspended AstraZeneca’s vaccine?

Germany, France, Italy and Spain on Monday suspended AstraZeneca's Covid vaccinations, joining Ireland, Denmark, Norway, Bulgaria and Iceland.

Sweden on Tuesday became the latest country to halt distribution.

Austria suspended vaccinations from one batch of the drug, as did Estonia, Latvia, Luxembourg, Lithuania and Romania.

A deserted vaccination centre in Germany after the country paused inoculations with the AstraZeneca-Oxford Covid-19 drug. AP
A deserted vaccination centre in Germany after the country paused inoculations with the AstraZeneca-Oxford Covid-19 drug. AP

How did the European Medical Association react?

The EU's medicines regulator said on Tuesday it was "firmly convinced" that the benefits of AstraZeneca's Covid shot outweighed potential risks, insisting there was no evidence linking the vaccine to blood clots.

"We are still firmly convinced that the benefits of the AstraZeneca vaccine in preventing Covid-19 with its associated risk of hospitalisation and death outweigh the risk of these side effects," EMA executive director Emer Cooke said.

"At present there is no indication that vaccination caused these conditions".

Scientists have widely criticised European countries for suspending the shot, saying there is not enough evidence linking it to blood clotting. Reuters
Scientists have widely criticised European countries for suspending the shot, saying there is not enough evidence linking it to blood clotting. Reuters

Ms Cooke said that the regulator was "looking at adverse events associated with all vaccines".

How did British authorities react?

Authorities in Britain see no evidence of more frequent blood clots among those inoculated with the vaccine.

The country has administered more than 11 million AstraZeneca-Oxford doses.

The UK’s Healthcare Products Regulatory Agency said people should continue to receive their Covid-19 vaccines.

“We are closely reviewing reports but the evidence available does not suggest the vaccine is the cause,” MHRA safety lead Dr Phil Bryan said.

“Blood clots can occur naturally and are not uncommon … the number of blood clots reported after having the vaccine is not greater than the number that would have occurred naturally in the vaccinated population.”

Prime Minister Boris Johnson hailed the effectiveness of the British-made vaccine and said it demonstrated the country's worldwide influence.

"That vaccine is safe and works extremely well, and now, only six months later, it is being made in multiple places from India to the US, as well as Britain, and it is being used around the world," he wrote in The Times.

What is the next step?

The EMA’s safety committee reviewed blood clot data on Tuesday and an extraordinary meeting was called for Thursday to consider whether any action should be taken.

If a strong association is found with vaccination, the regulator could put procedures in place to avoid similar problems occurring.

Several countries said they would lift the ban on AstraZeneca vaccines if the committee decided on Thursday decided against further action.

What did AstraZeneca say?

AstraZeneca said 15 events of deep-vein thrombosis – a blood clot in a vein – and 22 events of pulmonary embolism – when a blood clot entersthe lungs – were reported among those vaccinated in the UK and EU.

The company said these figures were "much lower than would be expected to occur naturally in a general population of this size and is similar across other licensed Covid-19 vaccines".

Has the EU had problems with AstraZeneca before?

The EU was embroiled in a major dispute with AstraZeneca this year after the pharmaceutical company said it would reduce deliveries to the bloc owing to a shortage of doses.

On March 5, Italy used the bloc’s transparency mechanism to block a shipment of vaccines made by AstraZeneca bound for Australia.

How will the ban affect Europe’s struggling vaccination drive?

The temporary bans came as Europe’s inoculation campaign was beginning to gather pace after a difficult start.

As well as supply shortages, some European nations experienced hesitancy, with people reluctant to take the AstraZeneca shot.

The drug was labelled “quasi-ineffective” by French President Emmanuel Macron.

German and French regulators added to the problem after recommending the vaccine for people aged under 65, citing a lack of safety data in vaccinated groups.

Those decisions were reversed but the damage was already done, with vaccine centres stocked with doses from AstraZeneca pictured empty.

Prof Openshaw said the latest news was likely to further damage the drug’s reputation in Europe.

“I think it is a disaster for the vaccination uptake in Europe, which is already on slightly unsteady ground in some countries,” he said.

Company Profile

Name: Thndr
Started: 2019
Co-founders: Ahmad Hammouda and Seif Amr
Sector: FinTech
Headquarters: Egypt
UAE base: Hub71, Abu Dhabi
Current number of staff: More than 150
Funds raised: $22 million

UAE currency: the story behind the money in your pockets
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Starring: Yonas Kibreab, Zoe Saldana, Brad Garrett

Directors: Madeline Sharafian, Domee Shi, Adrian Molina

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Dunki
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Number of Chinese tourists coming to UAE in 2017 was... 1.3m

Alibaba’s new ‘Tech Town’  in Dubai is worth... $600m

China’s investment in the MIddle East in 2016 was... $29.5bn

The world’s most valuable start-up in 2018, TikTok, is valued at... $75bn

Boost to the UAE economy of 5G connectivity will be... $269bn 

The five pillars of Islam

1. Fasting 

2. Prayer 

3. Hajj 

4. Shahada 

5. Zakat 

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.

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Recipe: Spirulina Coconut Brothie

Ingredients
1 tbsp Spirulina powder
1 banana
1 cup unsweetened coconut milk (full fat preferable)
1 tbsp fresh turmeric or turmeric powder
½ cup fresh spinach leaves
½ cup vegan broth
2 crushed ice cubes (optional)

Method
Blend all the ingredients together on high in a high-speed blender until smooth and creamy. 

T20 World Cup Qualifier fixtures

Tuesday, October 29

Qualifier one, 2.10pm – Netherlands v UAE

Qualifier two, 7.30pm – Namibia v Oman

Wednesday, October 30

Qualifier three, 2.10pm – Scotland v loser of qualifier one

Qualifier four, 7.30pm – Hong Kong v loser of qualifier two

Thursday, October 31

Fifth-place playoff, 2.10pm – winner of qualifier three v winner of qualifier four

Friday, November 1

Semi-final one, 2.10pm – Ireland v winner of qualifier one

Semi-final two, 7.30pm – PNG v winner of qualifier two

Saturday, November 2

Third-place playoff, 2.10pm

Final, 7.30pm

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Transmission: six-speed automatic

Power: 165hp

Torque: 240Nm

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Spider-Man: No Way Home

Director: Jon Watts

Stars: Tom Holland, Zendaya, Jacob Batalon 

Rating:*****

The bio

Favourite book: Peter Rabbit. I used to read it to my three children and still read it myself. If I am feeling down it brings back good memories.

Best thing about your job: Getting to help people. My mum always told me never to pass up an opportunity to do a good deed.

Best part of life in the UAE: The weather. The constant sunshine is amazing and there is always something to do, you have so many options when it comes to how to spend your day.

Favourite holiday destination: Malaysia. I went there for my honeymoon and ended up volunteering to teach local children for a few hours each day. It is such a special place and I plan to retire there one day.

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.

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Torbal Rayeh Wa Jayeh
Starring: Ali El Ghoureir, Khalil El Roumeithy, Mostafa Abo Seria
Stars: 3

Results

Stage 7:

1. Caleb Ewan (AUS) Lotto Soudal - 3:18:29

2. Sam Bennett (IRL) Deceuninck-QuickStep - same time

3. Phil Bauhaus (GER) Bahrain Victorious

4. Michael Morkov (DEN) Deceuninck-QuickStep

5. Cees Bol (NED) Team DSM

General Classification:

1. Tadej Pogacar (SLO) UAE Team Emirates - 24:00:28

2. Adam Yates (GBR) Ineos Grenadiers - 0:00:35

3. Joao Almeida (POR) Deceuninck-QuickStep - 0:01:02

4. Chris Harper (AUS) Jumbo-Visma - 0:01:42

5. Neilson Powless (USA) EF Education-Nippo - 0:01:45

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Engine: 2.0-litre 4-cylinder turbo

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Torque: 400Nm from 1,550-4,000rpm

Transmission: Eight-speed auto

Fuel consumption: 6.1L/100km

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On sale: now

The years Ramadan fell in May

1987

1954

1921

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  • Olympic-size swimming pool with a split bulkhead for multi-use configurations, including water polo and 50m/25m training lanes
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RESULTS

Bantamweight:
Zia Mashwani (PAK) bt Chris Corton (PHI)

Super lightweight:
Flavio Serafin (BRA) bt Mohammad Al Khatib (JOR)

Super lightweight:
Dwight Brooks (USA) bt Alex Nacfur (BRA)

Bantamweight:
Tariq Ismail (CAN) bt Jalal Al Daaja (JOR)

Featherweight:
Abdullatip Magomedov (RUS) bt Sulaiman Al Modhyan (KUW)

Middleweight:
Mohammad Fakhreddine (LEB) bt Christofer Silva (BRA)

Middleweight:
Rustam Chsiev (RUS) bt Tarek Suleiman (SYR)

Welterweight:
Khamzat Chimaev (SWE) bt Mzwandile Hlongwa (RSA)

Lightweight:
Alex Martinez (CAN) bt Anas Siraj Mounir (MAR)

Welterweight:
Jarrah Al Selawi (JOR) bt Abdoul Abdouraguimov (FRA)

Timeline

1947
Ferrari’s road-car company is formed and its first badged car, the 125 S, rolls off the assembly line

1962
250 GTO is unveiled

1969
Fiat becomes a Ferrari shareholder, acquiring 50 per cent of the company

1972
The Fiorano circuit, Ferrari’s racetrack for development and testing, opens

1976
First automatic Ferrari, the 400 Automatic, is made

1987
F40 launched

1988
Enzo Ferrari dies; Fiat expands its stake in the company to 90 per cent

2002
The Enzo model is announced

2010
Ferrari World opens in Abu Dhabi

2011
First four-wheel drive Ferrari, the FF, is unveiled

2013
LaFerrari, the first Ferrari hybrid, arrives

2014
Fiat Chrysler announces the split of Ferrari from the parent company

2015
Ferrari launches on Wall Street

2017
812 Superfast unveiled; Ferrari celebrates its 70th anniversary