Previous Covid infection may not offer long-term protection, study finds

Research found marked differences in immune response of medical staff six months after contracting virus

Previous infection with coronavirus does not necessarily protect against Covid in the longer term, especially when caused by new variants of concern, a study on healthcare workers suggests.

Researchers at Oxford University found marked differences in the immune responses of medical staff who contracted Covid, with some appearing far better equipped than others to combat the disease six months later.

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‘Gamechanging’ £10m environmental DNA project to map life in world’s rivers

eBioAtlas programme aims to identify fish, birds, amphibians and land animals in freshwater systems from the Ganges to the Mekong

Concealed by the turbid, swirling waters of the Amazon, the Mekong and the Congo, the biodiversity of the world’s great rivers has largely remained a mystery to scientists. But now a multimillion-pound project aims to describe and identify the web of life in major freshwater ecosystems around the world with “gamechanging” DNA technology.

The International Union for Conservation of Nature (IUCN) and UK-based environmental DNA (eDNA) specialists NatureMetrics have launched a partnership to take thousands of water samples from freshwater river systems like the Ganges and the Niger delta to identify the fish, birds, amphibians and land animals that live in and around them.

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Ultra-thin film could one day turn regular glasses into night vision goggles, researchers say

Developed by Australian and European researchers, the film works by converting infrared light into light visible to the human eye

A transparent metallic film allowing a viewer to see in the dark could one day turn regular spectacles into night vision googles.

The ultra-thin film, made of a semiconductor called gallium arsenide, could also be used to develop compact and flexible infrared sensors, scientists say.

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More countries restrict travel from UK over Delta variant fears

Ireland to double to 10 days its quarantine period for UK travellers who are not fully vaccinated

Ireland is to double to 10 days its quarantine period for travellers from the UK who are not fully vaccinated, joining a growing list of countries imposing stricter travel rules on British arrivals due to concerns over the rapid spread of the Delta variant.

The announcement came after Boris Johnson on Monday delayed by a month the final stage of England’s exit from lockdown amid accusations the government should have acted faster by placing India, where the variant was first detected, on its red restricted-travel list before 23 April.

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The Covid Delta variant: how effective are the vaccines?

Analysis: what protection do they offer against infection, hospital admission and death?

As lockdown easing in England is delayed from 21 June to a possible date of 19 July amid concerns of a substantial wave of hospitalisations due to the Delta variant of coronavirus, we take a look at the latest data on the protection offered by vaccines.

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China set to administer 1bn Covid vaccine doses by end of this week

Cash incentives and gifts offered to fulfil target of vaccinating 40% of population by end of month

China is on track to administer 1bn vaccine doses by the end of this week, after bolstering production and distribution networks in an ambitious drive to vaccinate 40% of the population by this month.

Chinese authorities have been encouraging people to take the free and voluntary doses with cash incentives, gifts and colour-coded signage to laud or shame businesses depending on vaccination rates, as well as the promise of protection against Covid-19.

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Eradicating polio is finally within reach. Why is the UK taking its foot off the pedal? | Anne Wafula Strike

Instead of cutting the aid budget – including 95% from the plan to stamp out the disease – Britain should take a global lead

Despite the Covid pandemic, there have been just two recorded cases of wild polio in 2021 – in Afghanistan and Pakistan, the two remaining hiding places for the disease. But eradication is not guaranteed. Polio is virulent and spreads quickly. Even one case poses a threat to unvaccinated children everywhere, which is why a new strategy launched last week by the Global Polio Eradication Initiative (GPEI) outlines a plan to utilise this small window of opportunity for the world to end polio for good.

A 99.9% fall in polio cases globally in recent decades is thanks in large part to the GPEI and its supporters. The British government’s recent announcement that it will slash its contributions to the GPEI by more than 95% has been a body blow. The funding cut amounts to almost a quarter of the annual World Health Organization polio eradication budget.

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‘The Silicon Valley of turf’: how the UK’s pursuit of the perfect pitch changed football

They used to look like quagmires, ice rinks or dustbowls, depending on the time of year. But as big money entered football, pristine pitches became crucial to the sport’s image – and groundskeepers became stars

It was a big moment for English football talent when Real Madrid poached Paul Burgess from Arsenal in 2009. After starting his career at Blackpool FC, Burgess had arrived at the north London club in 1999, rising to prominence at the age of just 21. He excelled on the European stage during Arsenal’s Champions League campaigns in the early 2000s, and shone at Euro 2004 in Portugal. Four years later, he put in another commanding performance at the European Championships. Not long after that, Real Madrid, the most prestigious club in world football, made their sensational transfer swoop.

If you don’t remember any of this, it’s not because Burgess was a flop at Madrid. It’s because he was Arsenal’s head groundsman. Burgess’s transfer was the beginning of a Europe-wide spending spree on British turf talent. Real’s rivals Atlético snapped up Dan Gonzalez, who had impressed with his work for Bournemouth FC. Tony Stones, who got his start looking after bowling greens in Barnsley before eventually becoming head groundsman at Wembley, was signed to oversee the French national stadium, the Stade de France. Fifa, meanwhile, signed Alan Ferguson, a Scot who had won seven Groundsman of the Year awards during 12 seasons at Ipswich Town, as their first in-house senior pitch manager.

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Vaccines and oxygen run out as third wave of Covid hits Uganda

Vaccine thefts reported and hospitals unable to admit patients as cases leap 2,800% in a month

Uganda has all but run out of Covid-19 vaccines and oxygen as the country grapples with another wave of the pandemic.

Both private and public medical facilities in the capital, Kampala and in towns across the country – including regional hubs in Entebbe, Jinja, Soroti, Gulu and Masaka – have reported running out or having acute shortages of AstraZeneca vaccines and oxygen. Hospitals report they are no longer able to admit patients to intensive care.

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England’s Covid lockdown lifting: is a four-week delay enough?

Analysis: Even a short pause is expected to reduce the number of people going to hospital as more people are vaccinated

The roadmap out of lockdown – England’s strategy to return to a life more normal – was heavy on dates from the start. The first three steps, in March, April and May, passed so smoothly that a crucial point was easily forgotten: reopening rested on data, not dates, at least that was what scientific advisers hoped. Well, now the data has spoken.

England is not in lockdown today. Children are back at school. Cafes, restaurants and pubs are open. People can mix indoors, albeit in small numbers. Thousands can watch football matches. As the country moved from one step to another, more contact between people was expected to fuel cases, hospitalisations and even deaths. To keep them to a minimum, we have the vaccination programme.

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What were some of the collateral effects of lockdowns? | David Spiegelhalter and Anthony Masters

Hospital waiting lists rose, but traffic accidents fell – Covid-19’s consequences will emerge in time, but it’s not all quantifiable
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In early 2020, there were bans on most social contact, international travel stopped, workplaces and schools shut. Lockdown had arrived. These policies may have limited the spread of the virus, but what collateral harms and benefits on physical health were there?

Despite recommendations to continue to seek help, normal healthcare endured severe disruption. In England, waiting lists for hospital treatment now exceed 5m, up more than 500,000 from before the pandemic. During the first wave, nearly 90,000 joint replacement surgeries were cancelled, leaving many struggling with pain. Cancer investigations and diagnoses fell and although there is no sign yet of any excess cancer deaths, this may only become apparent in subsequent years.

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Why are women more prone to long Covid?

While men over 50 tend to suffer the most acute symptoms of coronavirus, women who get long Covid outnumber men by as much as four to one

In June 2020, as the first reports of long Covid began to filter through the medical community, doctors attempting to grapple with this mysterious malaise began to notice an unusual trend. While acute cases of Covid-19 – particularly those hospitalised with the disease – tended to be mostly male and over 50, long Covid sufferers were, by contrast, both relatively young and overwhelmingly female.

Early reports of long Covid at a Paris hospital between May and July 2020 suggested that the average age was around 40, and women afflicted by the longer-term effects of Covid-19 outnumbered men by four to one.

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Should England open up on 21 June? The factors Johnson must consider

The prime minister has a host of problems to weigh up before deciding to remove all legal restrictions on social contact

The key issue is the extent to which infections of the Delta variant first detected in India will lead to hospitalisations and deaths. The problem is that it’s too early to say. Because of the lag between cases and admissions to hospital, many experts say a short delay could be a major benefit to understanding that relationship. “With the current knowledge about Delta, we can’t really predict the size of that wave,” said Anne Cori of Imperial College London’s modelling group. “Delaying the easing allows time to accumulate more evidence about the characteristics of Delta. And I hope in a few weeks, we would be in a better position to predict what the epidemic may look like in the next few weeks or months.”

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David Eagleman: ‘The working of the brain resembles drug dealers in Albuquerque’

The neuroscientist, broadcaster and author on the evolution of the brain, the mystery of consciousnesss, and why the next generation will be much smarter than us

David Eagleman, 50, is an American neuroscientist, bestselling author and presenter of the BBC series The Brain, as well as co-founder and chief executive officer of Neosensory, which develops devices for sensory substitution. His area of speciality is brain plasticity, and that is the subject of his new book, Livewired, which examines how experience refashions the brain, and shows that it is a much more adaptable organ than previously thought.

For the past half-century or more the brain has been spoken of in terms of a computer. What are the biggest flaws with that particular model?
It’s a very seductive comparison. But in fact, what we’re looking at is three pounds of material in our skulls that is essentially a very alien kind of material to us. It doesn’t write down memories, the way we think of a computer doing it. And it is capable of figuring out its own culture and identity and making leaps into the unknown. I’m here in Silicon Valley. Everything we talk about is hardware and software. But what’s happening in the brain is what I call livewire, where you have 86bn neurons, each with 10,000 connections, and they are constantly reconfiguring every second of your life. Even by the time you get to the end of this paragraph, you’ll be a slightly different person than you were at the beginning.

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Rapid Covid tests used in mass UK programme get scathing US report

Innova tests’ performance not proven and they should be returned to manufacturer or thrown in bin, says FDA

The US Food and Drug Agency (FDA) has raised significant concerns about the rapid Covid test on which the UK government has based its multibillion-pound mass testing programme.

In a scathing review, the US health agency suggested the performance of the test had not been established, presenting a risk to health, and that the tests should be thrown in the bin or returned to the California-based manufacturer Innova.

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Delta variant causes more than 90% of new Covid cases in UK

Variant first discovered in India is thought to spread more easily and be more resistant to vaccines

More than 90% of Covid cases in the UK are now down to the coronavirus Delta variant first discovered in India, data has revealed, as the total number of confirmed cases passed 42,000.

Also known as B.1.617.2, the Delta variant has been linked to a rise in Covid cases in the UK in the past weeks. It is believed to spread more easily than the Alpha variant, B.1.1.7, that was first detected in Kent, and is somewhat more resistant to Covid vaccines, particularly after just one dose. It may be also associated with a greater risk of hospitalisation.

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Australian researchers discover why only two of echidna’s four penis heads become erect at one time

The major blood vessel of the penis splits into two main branches which each supply two of the four penile heads

The penis of an echidna has four heads but only two become erect at any one time. Now, Australian researchers have uncovered why.

Scientists discovered the marsupial has unusual reproductive anatomy that causes male echidnas to ejaculate from only two of their four penile heads at one time.

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Solar eclipse 2021: spectacle to be visible across UK and Ireland

Skygazers – with appropriate eye protection – will be able to see much of sun being obscured from 10.08am

Views of a partial solar eclipse will be “somewhat fleeting” across certain parts of the UK due to cloudy skies, forecasters have said.

But those in central and south-east England will have clear spells to witness the spectacle, according to the Met Office. On Thursday morning, skygazers will be able to see nearly a third of the sun being blocked out by the moon in what is known as an annular eclipse.

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