A one-time lockdown will not halt the new coronavirus and repeated periods of social distancing may be required into 2022, Harvard scientists have predicted.
Their study came as the United States entered the peak of its Covid-19 caseload this week and worldwide cases approached 2,000,000 on Wednesday.
The Harvard team's computer simulation, published in the journal Science on Tuesday, assumed that Covid-19 will become seasonal, like closely related coronaviruses that cause the common cold, with higher transmission rates in colder months.
But much remains unknown, including the level of immunity in people who had the virus and recovered, and how long it lasts, the authors said.
Social distancing was so effective that virtually no population immunity is built
"We found that one-time social distancing measures are likely to be insufficient to maintain the incidence of Sars-CoV-2 within the limits of critical care capacity in the United States," said lead author Stephen Kissler from Harvard's TH Chan School of Public Health.
Sars-CoV-2 is the scientific name for the 'new coronavirus', which causes Covid-19.
"What seems to be necessary in the absence of other sorts of treatments are intermittent social distancing periods," he said.
Widespread viral testing would be required in order to determine when the thresholds to re-trigger distancing are crossed, said the authors.
The duration and intensity of lockdowns can be relaxed as treatments and vaccines become available. But in their absence, on and then off distancing would give hospitals time to increase critical care capacity to cater for the surge in cases that would occur when the measures are eased.
"By permitting periods of transmission that reach higher prevalence than otherwise would be possible, they allow an accelerated acquisition of herd immunity," said co-author Marc Lipsitch.
Conversely, too much social distancing without respite can be a bad thing. Under one modeled scenario "the social distancing was so effective that virtually no population immunity is built," the paper said, hence the need for an intermittent approach.
The authors acknowledged a major drawback in their model is how little we currently know about how strong a previously infected person's immunity is and how long it lasts.
Virus likely here to stay
At present the best guesses based on closely-related coronaviruses are that it will confer some immunity, for up to about a year. There might also be some cross-protective immunity against Covid-19 if a person is infected by a common cold-causing betacoronavirus.
One thing however is almost certain: the virus is here to stay. The team said it was highly unlikely that immunity will be strong enough and last long enough that Covid-19 will die out after an initial wave, as was the case with the Sars outbreak of 2002-2003.
Antibody tests that have just entered the market and look for whether a person has been previously infected will be crucial in answering these vital questions about immunity, they argued, and a vaccine remains the ultimate weapon.
Outside experts praised the paper even as they emphasised how much remained unknown.
"This is an excellent study that uses mathematical models to explore the dynamics of Covid-19 over a period of several years, in contrast to previously published studies that have focused on the coming weeks or months," Mark Woolhouse, an infectious disease epidemiologist at the University of Edinburgh said.
"It is important to recognise that it is a model; it is consistent with current data but is nonetheless based on a series of assumptions - for example about acquired immunity - that are yet to be confirmed."
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Nepotism is the name of the game
Salman Khan’s father, Salim Khan, is one of Bollywood’s most legendary screenwriters. Through his partnership with co-writer Javed Akhtar, Salim is credited with having paved the path for the Indian film industry’s blockbuster format in the 1970s. Something his son now rules the roost of. More importantly, the Salim-Javed duo also created the persona of the “angry young man” for Bollywood megastar Amitabh Bachchan in the 1970s, reflecting the angst of the average Indian. In choosing to be the ordinary man’s “hero” as opposed to a thespian in new Bollywood, Salman Khan remains tightly linked to his father’s oeuvre. Thanks dad.
Company%20profile
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Profile of Udrive
Date started: March 2016
Founder: Hasib Khan
Based: Dubai
Employees: 40
Amount raised (to date): $3.25m – $750,000 seed funding in 2017 and a Seed round of $2.5m last year. Raised $1.3m from Eureeca investors in January 2021 as part of a Series A round with a $5m target.
COMPANY PROFILE
Name: Xpanceo
Started: 2018
Founders: Roman Axelrod, Valentyn Volkov
Based: Dubai, UAE
Industry: Smart contact lenses, augmented/virtual reality
Funding: $40 million
Investor: Opportunity Venture (Asia)
The biog
Age: 46
Number of Children: Four
Hobby: Reading history books
Loves: Sports
Sole survivors
- Cecelia Crocker was on board Northwest Airlines Flight 255 in 1987 when it crashed in Detroit, killing 154 people, including her parents and brother. The plane had hit a light pole on take off
- George Lamson Jr, from Minnesota, was on a Galaxy Airlines flight that crashed in Reno in 1985, killing 68 people. His entire seat was launched out of the plane
- Bahia Bakari, then 12, survived when a Yemenia Airways flight crashed near the Comoros in 2009, killing 152. She was found clinging to wreckage after floating in the ocean for 13 hours.
- Jim Polehinke was the co-pilot and sole survivor of a 2006 Comair flight that crashed in Lexington, Kentucky, killing 49.
Living in...
This article is part of a guide on where to live in the UAE. Our reporters will profile some of the country’s most desirable districts, provide an estimate of rental prices and introduce you to some of the residents who call each area home.
Our legal consultant
Name: Hassan Mohsen Elhais
Position: legal consultant with Al Rowaad Advocates and Legal Consultants.
MATCH INFO
Burnley 0
Man City 3
Raheem Sterling 35', 49'
Ferran Torres 65'
What sanctions would be reimposed?
Under ‘snapback’, measures imposed on Iran by the UN Security Council in six resolutions would be restored, including:
- An arms embargo
- A ban on uranium enrichment and reprocessing
- A ban on launches and other activities with ballistic missiles capable of delivering nuclear weapons, as well as ballistic missile technology transfer and technical assistance
- A targeted global asset freeze and travel ban on Iranian individuals and entities
- Authorisation for countries to inspect Iran Air Cargo and Islamic Republic of Iran Shipping Lines cargoes for banned goods
Explainer: Tanween Design Programme
Non-profit arts studio Tashkeel launched this annual initiative with the intention of supporting budding designers in the UAE. This year, three talents were chosen from hundreds of applicants to be a part of the sixth creative development programme. These are architect Abdulla Al Mulla, interior designer Lana El Samman and graphic designer Yara Habib.
The trio have been guided by experts from the industry over the course of nine months, as they developed their own products that merge their unique styles with traditional elements of Emirati design. This includes laboratory sessions, experimental and collaborative practice, investigation of new business models and evaluation.
It is led by British contemporary design project specialist Helen Voce and mentor Kevin Badni, and offers participants access to experts from across the world, including the likes of UK designer Gareth Neal and multidisciplinary designer and entrepreneur, Sheikh Salem Al Qassimi.
The final pieces are being revealed in a worldwide limited-edition release on the first day of Downtown Designs at Dubai Design Week 2019. Tashkeel will be at stand E31 at the exhibition.
Lisa Ball-Lechgar, deputy director of Tashkeel, said: “The diversity and calibre of the applicants this year … is reflective of the dynamic change that the UAE art and design industry is witnessing, with young creators resolute in making their bold design ideas a reality.”
AUSTRALIA SQUADS
ODI squad: Aaron Finch (captain), Ashton Agar, Alex Carey, Pat Cummins, Josh Hazlewood, Marnus Labuschagne, Mitchell Marsh, Glenn Maxwell, Kane Richardson, Steve Smith, Mitchell Starc, Matthew Wade, David Warner, Adam Zampa
Twenty20 squad: Aaron Finch (captain), Sean Abbott, Ashton Agar, Alex Carey, Pat Cummins, Mitchell Marsh, Glenn Maxwell, Jhye Richardson, Kane Richardson, Steve Smith, Mitchell Starc, Matthew Wade, David Warner, Adam Zampa
COMPANY%20PROFILE
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Global state-owned investor ranking by size
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United States
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2.
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China
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3.
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UAE
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4.
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Japan
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5
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Norway
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Canada
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Singapore
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Australia
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Story%20behind%20the%20UAE%20flag
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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
About Housecall
Date started: July 2020
Founders: Omar and Humaid Alzaabi
Based: Abu Dhabi
Sector: HealthTech
# of staff: 10
Funding to date: Self-funded
Teaching in coronavirus times
Dengue%20fever%20symptoms
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Scores
New Zealand 266 for 9 in 50 overs
Pakistan 219 all out in 47.2 overs
New Zealand win by 47 runs
How to protect yourself when air quality drops
Install an air filter in your home.
Close your windows and turn on the AC.
Shower or bath after being outside.
Wear a face mask.
Stay indoors when conditions are particularly poor.
If driving, turn your engine off when stationary.
UAE currency: the story behind the money in your pockets
Read more about the coronavirus
The biog
Name: Abeer Al Shahi
Emirate: Sharjah – Khor Fakkan
Education: Master’s degree in special education, preparing for a PhD in philosophy.
Favourite activities: Bungee jumping
Favourite quote: “My people and I will not settle for anything less than first place” – Sheikh Mohammed bin Rashid.
The specs: 2018 Nissan 370Z Nismo
The specs: 2018 Nissan 370Z Nismo
Price, base / as tested: Dh182,178
Engine: 3.7-litre V6
Power: 350hp @ 7,400rpm
Torque: 374Nm @ 5,200rpm
Transmission: Seven-speed automatic
Fuel consumption, combined: 10.5L / 100km
Mercer, the investment consulting arm of US services company Marsh & McLennan, expects its wealth division to at least double its assets under management (AUM) in the Middle East as wealth in the region continues to grow despite economic headwinds, a company official said.
Mercer Wealth, which globally has $160 billion in AUM, plans to boost its AUM in the region to $2-$3bn in the next 2-3 years from the present $1bn, said Yasir AbuShaban, a Dubai-based principal with Mercer Wealth.
“Within the next two to three years, we are looking at reaching $2 to $3 billion as a conservative estimate and we do see an opportunity to do so,” said Mr AbuShaban.
Mercer does not directly make investments, but allocates clients’ money they have discretion to, to professional asset managers. They also provide advice to clients.
“We have buying power. We can negotiate on their (client’s) behalf with asset managers to provide them lower fees than they otherwise would have to get on their own,” he added.
Mercer Wealth’s clients include sovereign wealth funds, family offices, and insurance companies among others.
From its office in Dubai, Mercer also looks after Africa, India and Turkey, where they also see opportunity for growth.
Wealth creation in Middle East and Africa (MEA) grew 8.5 per cent to $8.1 trillion last year from $7.5tn in 2015, higher than last year’s global average of 6 per cent and the second-highest growth in a region after Asia-Pacific which grew 9.9 per cent, according to consultancy Boston Consulting Group (BCG). In the region, where wealth grew just 1.9 per cent in 2015 compared with 2014, a pickup in oil prices has helped in wealth generation.
BCG is forecasting MEA wealth will rise to $12tn by 2021, growing at an annual average of 8 per cent.
Drivers of wealth generation in the region will be split evenly between new wealth creation and growth of performance of existing assets, according to BCG.
Another general trend in the region is clients’ looking for a comprehensive approach to investing, according to Mr AbuShaban.
“Institutional investors or some of the families are seeing a slowdown in the available capital they have to invest and in that sense they are looking at optimizing the way they manage their portfolios and making sure they are not investing haphazardly and different parts of their investment are working together,” said Mr AbuShaban.
Some clients also have a higher appetite for risk, given the low interest-rate environment that does not provide enough yield for some institutional investors. These clients are keen to invest in illiquid assets, such as private equity and infrastructure.
“What we have seen is a desire for higher returns in what has been a low-return environment specifically in various fixed income or bonds,” he said.
“In this environment, we have seen a de facto increase in the risk that clients are taking in things like illiquid investments, private equity investments, infrastructure and private debt, those kind of investments were higher illiquidity results in incrementally higher returns.”
The Abu Dhabi Investment Authority, one of the largest sovereign wealth funds, said in its 2016 report that has gradually increased its exposure in direct private equity and private credit transactions, mainly in Asian markets and especially in China and India. The authority’s private equity department focused on structured equities owing to “their defensive characteristics.”
The rules of the road keeping cyclists safe
Cyclists must wear a helmet, arm and knee pads
Have a white front-light and a back red-light on their bike
They must place a number plate with reflective light to the back of the bike to alert road-users
Avoid carrying weights that could cause the bike to lose balance
They must cycle on designated lanes and areas and ride safe on pavements to avoid bumping into pedestrians
Pearls on a Branch: Oral Tales
Najlaa Khoury, Archipelago Books
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."
The five pillars of Islam
The years Ramadan fell in May
