Coronavirus: Antibody studies show herd immunity experiments are ‘very dangerous’


Gillian Duncan
  • English
  • Arabic

Far fewer people have contracted Covid-19 than expected according to antibody studies, meaning herd immunity experiments are not only doomed to fail, they are dangerous, the WHO said on Monday.

Only between 1 per cent and 10 per cent of people globally have shown evidence of infection, according to the early results of some of the 90 serology surveys taking place across the world.

That means the health implications of the virus are much more severe than many believed it to be, said Dr Mike Ryan, executive director of the World Health Organisation's Health Emergencies Programme.

The new figures show any attempt to pursue a strategy that would result in "herd immunity" without a vaccine would be “very dangerous”.

Maria Van Kerkhove, the WHO's technical lead, said the body had not yet been able to evaluate the methodology of many of the ongoing seroprevalence studies, which look for antibodies in the blood that point to past Covid-19 infection.

But the studies' preliminary results showed a “very low proportion” of people had contracted the virus across the world, mainly in the range of 1 per cent to 10 per cent, with a “couple” pointing to a slightly higher prevalence of 15 per cent.

“What these seroepidemiologic studies indicate to us is that there is a large proportion of the population that remains susceptible. And that’s important when you think about what happens in subsequent waves, or what may happen as a potential resurgence,” she said.

“So we have a long way to go with this virus, because the virus has more people that can be infected.”

Dr Ryan said the estimates disproved the theory that once serology study results were available they would show most people had already had the virus and were therefore immune.

“The preliminary results from the seroepidemiology studies are showing the opposite.

“It is showing the proportion of people with significant clinical illness is actually a higher proportion of all those who have been infected, because the number of people infected in the total population is probably much lower than we expected,” he said.

He said that meant “we have a long way to go” with the virus.

“And it means, as the director general has been saying, for months, this is a serious disease. This is public enemy number one.”

The estimates chimed with research conducted by governments in Europe, which suggested that Belgium has the highest percentage of citizens with a degree of possible immunity to the virus, with an estimated 6.4 per cent prevalence.

In the UK, the hardest hit country on the continent in terms of deaths, it is 3.8 per cent. Only 0.7 per cent of the population is thought to have had the disease in Germany.

On the continent only Sweden has refused to lockdown its economy and population to stem the spread of the virus, introducing only lax, and largely voluntary controls.

That led a state epidemiologist to estimate that almost half, or 40 per cent of the population, would be immune by the end of May. But only 2.5 per cent of the population has so far contracted it, according to the research by the Italian Institute for International Political Studies (ISPI).

Dr Ryan said any strategy involving calculations of how to achieve herd immunity was not only irresponsible, but dangerous.

“Humans are not herds. And as such the concept of herd immunity is generally reserved for calculating how many people would need to be vaccinated in a population in order to generate that same effect,” he said.

“I do think this idea that maybe countries which have had lax measures or haven’t done anything will all of a sudden magically reach some herd immunity, and so what if we lose a few old people along the way, this is a really dangerous calculation.”

He said responsible member states value every member of their society and try to do everything possible to protect their health, and that of the economy.

“We need to get our priorities right as we enter the next phase of this fight,” he added.

2019 ASIAN CUP FINAL

Japan v Qatar
Friday, 6pm
Zayed Sports City Stadium, Abu Dhabi

The specs
  • Engine: 3.9-litre twin-turbo V8
  • Power: 640hp
  • Torque: 760nm
  • On sale: 2026
  • Price: Not announced yet
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MATCH INFO

Karnatake Tuskers 114-1 (10 ovs)

Charles 57, Amla 47

Bangla Tigers 117-5 (8.5 ovs)

Fletcher 40, Moores 28 no, Lamichhane 2-9

Bangla Tiger win by five wickets

Despacito's dominance in numbers

Released: 2017

Peak chart position: No.1 in more than 47 countries, including the United States, the United Kingdom, Australia and Lebanon

Views: 5.3 billion on YouTube

Sales: With 10 million downloads in the US, Despacito became the first Latin single to receive Diamond sales certification

Streams: 1.3 billion combined audio and video by the end of 2017, making it the biggest digital hit of the year.

Awards: 17, including Record of the Year at last year’s prestigious Latin Grammy Awards, as well as five Billboard Music Awards

SPECS
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Global Fungi Facts

• Scientists estimate there could be as many as 3 million fungal species globally
• Only about 160,000 have been officially described leaving around 90% undiscovered
• Fungi account for roughly 90% of Earth's unknown biodiversity
• Forest fungi help tackle climate change, absorbing up to 36% of global fossil fuel emissions annually and storing around 5 billion tonnes of carbon in the planet's topsoil

MATCH INFO

Manchester City 6 Huddersfield Town 1
Man City: Agüero (25', 35', 75'), Jesus (31'), Silva (48'), Kongolo (84' og)
Huddersfield: Stankovic (43')

UAE currency: the story behind the money in your pockets
UAE players with central contracts

Rohan Mustafa, Ashfaq Ahmed, Chirag Suri, Rameez Shahzad, Shaiman Anwar, Adnan Mufti, Mohammed Usman, Ghulam Shabbir, Ahmed Raza, Qadeer Ahmed, Amir Hayat, Mohammed Naveed and Imran Haider.

Scoreline

Germany 2

Werner 9', Sane 19'

Netherlands 2

Promes 85', Van Dijk 90'

Specs

Engine: 51.5kW electric motor

Range: 400km

Power: 134bhp

Torque: 175Nm

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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

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Dust and sand storms compared

Sand storm

  • Particle size: Larger, heavier sand grains
  • Visibility: Often dramatic with thick "walls" of sand
  • Duration: Short-lived, typically localised
  • Travel distance: Limited 
  • Source: Open desert areas with strong winds

Dust storm

  • Particle size: Much finer, lightweight particles
  • Visibility: Hazy skies but less intense
  • Duration: Can linger for days
  • Travel distance: Long-range, up to thousands of kilometres
  • Source: Can be carried from distant regions
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Fuel economy, combined: 13.8L/100km
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Price: From Dh801,800
if you go

The flights

Etihad, Emirates and Singapore Airlines fly direct from the UAE to Singapore from Dh2,265 return including taxes. The flight takes about 7 hours.

The hotel

Rooms at the M Social Singapore cost from SG $179 (Dh488) per night including taxes.

The tour

Makan Makan Walking group tours costs from SG $90 (Dh245) per person for about three hours. Tailor-made tours can be arranged. For details go to www.woknstroll.com.sg

Engine: 3.5-litre V6

Transmission: eight-speed automatic

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While you're here
Roll of honour 2019-2020

Dubai Rugby Sevens

Winners: Dubai Hurricanes

Runners up: Bahrain

 

West Asia Premiership

Winners: Bahrain

Runners up: UAE Premiership

 

UAE Premiership

Winners: Dubai Exiles

Runners up: Dubai Hurricanes

 

UAE Division One

Winners: Abu Dhabi Saracens

Runners up: Dubai Hurricanes II

 

UAE Division Two

Winners: Barrelhouse

Runners up: RAK Rugby

The details

Heard It in a Past Life

Maggie Rogers

(Capital Records)

3/5

Brief scores:

Toss: Sindhis, elected to field first

Pakhtoons 137-6 (10 ov)

Fletcher 68 not out; Cutting 2-14

Sindhis 129-8 (10 ov)

Perera 47; Sohail 2-18

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Zidane's managerial achievements

La Liga: 2016/17
Spanish Super Cup: 2017
Uefa Champions League: 2015/16, 2016/17, 2017/18
Uefa Super Cup: 2016, 2017
Fifa Club World Cup: 2016, 2017

FFP EXPLAINED

What is Financial Fair Play?
Introduced in 2011 by Uefa, European football’s governing body, it demands that clubs live within their means. Chiefly, spend within their income and not make substantial losses.

What the rules dictate? 
The second phase of its implementation limits losses to €30 million (Dh136m) over three seasons. Extra expenditure is permitted for investment in sustainable areas (youth academies, stadium development, etc). Money provided by owners is not viewed as income. Revenue from “related parties” to those owners is assessed by Uefa's “financial control body” to be sure it is a fair value, or in line with market prices.

What are the penalties? 
There are a number of punishments, including fines, a loss of prize money or having to reduce squad size for European competition – as happened to PSG in 2014. There is even the threat of a competition ban, which could in theory lead to PSG’s suspension from the Uefa Champions League.

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Expert input

If you had all the money in the world, what’s the one sneaker you would buy or create?

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“I think I’d buy a defunct footwear brand; I’d like the challenge of reinterpreting a brand’s history and changing options.” Kris Balerite

 “I’d stir up a creative collaboration with designers Martin Margiela of the mixed patchwork sneakers, and Yohji Yamamoto.” Hussain Moloobhoy

“If I had all the money in the world, I’d live somewhere where I’d never have to wear shoes again.” Raj Malhotra

Specs

Engine: Duel electric motors
Power: 659hp
Torque: 1075Nm
On sale: Available for pre-order now
Price: On request

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