Covid live news: Lebanon hits record daily cases after blast; Russian vaccine must follow safety procedure, says WHO

Coronavirus updates: New Zealand records first new local cases in 102 days; global deaths likely to pass 750,000 this week, says WHO

As we reported earlier, the Dutch health minister said he plans to introduce mandatory home quarantine for people identified by local authorities as having been in close contact with somebody infected with coronavirus, and for travellers returning from high-risk countries.

Health minister Hugo de Jonge said in a letter to lawmakers that mandatory quarantine could be imposed if people refuse to isolate voluntarily.

Germany has extended a partial travel warning for Spain to the capital of Madrid and the Basque region due to the Covid-19 pandemic, the foreign ministry said on Tuesday.

The foreign ministry said it was warning against any unnecessary tourist trips to both regions because of a rising number of new infections and local restrictions put in place to contain the spread of coronavirus.

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Russia’s coronavirus vaccine: will it work, and is it safe?

Sputnik V’s development has been marked by worrying opacity and ethical issues

The race to find a vaccine against Covid-19 has not always been particularly edifying, driven at times by so-called “vaccine nationalism”, much cautioned against by the World Health Organization, which has itself been accused of being invested as much in self-interest and prestige as global public health.

Russia’s announcement that it has registered its Sputnik V vaccine as safe and effective for mass production and inoculation even before so-called phase 3 large-scale safety trials, which usually take months, fits the pattern.

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Study links cannabis use during pregnancy to autism risk

Research suggests 50% greater risk for children whose mothers report using cannabis

Children born to mothers who report using cannabis during pregnancy have about a 50% greater risk of developing autism, research suggests.

While the team behind the work said more research was needed to unpick whether cannabis itself was behind the link, they said the results were concerning.

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What we are learning about Covid-19 and kids

As schools around the world prepare to reopen, new scientific evidence about children and coronavirus is coming to light

Back in April, the French epidemiologist Arnaud Fontanet found himself leading an investigation in the town of Crépy-en-Valois, a small community of 15,000 inhabitants just to the north-east of Paris. In February, the town’s middle and high schools had become the centre of a new outbreak of Covid-19.

Fontanet and colleagues from the Pasteur Institute in Paris were tasked with conducting antibody testing across Crépy-en-Valois to understand the extent to which the virus had been circulating. As they surveyed the town, they noted an interesting pattern. While the virus had spread rampantly through the high school, with 38% of students being infected, along with 43% of teachers and 59% of non-teaching staff, the same was not true for the town’s six primary schools. While three primary-age pupils had caught Covid-19 in early February, none of these infections had led to a secondary case. Overall, just 9% of primary age pupils, 7% of teachers and 4% of non-teaching staff had been infected with the virus.

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‘The virus piggybacked on racism’: why did Covid-19 hit BAME families so hard?

Ida lost two brothers in 10 days, and Ken’s teenage sweetheart died at 44. Now, they’re looking for answers

Sir Oyaseh Ivowi sits in front of a poster of two of his three boys. Olume, the older brother, hovers over Isi; both wear traditional Nigerian dress. Underneath are the words: “Gone too soon, but not forgotten. Olume Godfrey Ivowi, 7 November 1973 to 10 April 2020. Isi Benjamin Emitsemu Ivowi, 17 November 1985 to 19 April 2020.”

Olume, 46, and Isi, 34, died in Luton and Milton Keynes respectively. Their passing made headlines because it was so shocking: two brothers killed by Covid-19 in such a short space of time. A third brother, Osi, also caught the virus, but has recovered.

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Coronavirus live news: UK recalls home tests over safety concerns as Indian health workers strike

Ten of thousands demand better pay and protection as cases rise in the Philippines, Greece and Italy

Hi, it’s Aaron Walawalkar here in London, picking up the blog from my colleague Damien Gayle.

Please get in touch with any suggestions for coverage, or comments by DM on Twitter @AaronWala or by email at aaron.walawalkar@theguardian.com.

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‘Wishful thinking’: the dangers of UK hype during Covid-19

From the UK government over-promising on testing to scientific spin on a vaccine, realism is in short supply

They were billed by the UK health secretary, Matt Hancock, as “lifesaving” and “hugely beneficial”: two new coronavirus tests that claim to deliver results within 90 minutes, promoted enthusiastically to the public with the help of front pages in the Times, the i and the Daily Mail, which declared they would “transform the war on corona”.

The suppliers are little known, evaluation data is not yet available, and it is unclear how effective the tests are outside hospital settings, not least because taking blood or swabs is difficult for non-medics.

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Revealed: UK’s rapid Covid test not yet approved by regulators

Exclusive: no data on accuracy of this and other test bought by government has been published

One of two 90-minute rapid coronavirus tests bought by the UK government and announced on Monday has yet to be approved by regulators, while no data on the accuracy of either has been published, the Guardian has learned.

The test, from Oxford Nanopore, a young biotech company spun off from Oxford University, has not yet gained a CE mark. Before Covid-19, Oxford Nanopore had been involved only in research, not tests for patients.

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‘We’re still so tired’: Europe’s doctors brace for second Covid-19 wave

When the Guardian spoke to staff in March they had no time for reflection. So what do they think of the new surge now?

During the initial peak of Spain’s Covid-19 pandemic in the spring, the virus displayed an unexpected mercy. In its spread, ferocity and awful novelty, it left health workers too tired and overwhelmed to look beyond the next few hours.

“There’s no time to get angry or to wonder why things have been organised the way they have been,” Sara Gayoso, an A&E doctor at El Escorial hospital near Madrid, told the Guardian at the end of March.

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Covid-19 may spread more easily in schools than thought, report warns

US health body highlights risks of reopening after outbreaks in state of Georgia and in Israel

Coronavirus may be more easily transmitted in school and summer camp settings than previously understood, after the emergence of new details of outbreaks in the US state of Georgia and in Israel that have underscored the risks of school reopenings.

A report by the US Centers for Disease Control and Prevention (CDC) into an outbreak at a summer camp in Georgia suggests children – even asymptomatic cases – may play an important role in community transmission of Covid-19.

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‘Disgusting’ study rating attractiveness of women with endometriosis retracted by medical journal

Fertility and Sterility took seven years to take down Italian study, which was criticised by doctors for ethical concerns and dubious justifications

A widely criticised peer-reviewed study that measured the attractiveness of women with endometriosis has been retracted from the medical journal Fertility and Sterility.

The study, Attractiveness of women with rectovaginal endometriosis: a case-control study, was first published in 2013 and has been defended by the authors and the journal in the intervening years despite heavy criticism from doctors, other researchers and people with endometriosis for its ethical concerns and dubious justifications, with one advocate calling the study “heartbreaking” and “disgusting”.

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Cramped workplaces, parties … the factors fuelling local Covid-19 spikes

What have resurgences around the world taught us about how local clusters emerge?

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  • It is not always possible to pinpoint the origin of a local spike in cases, particularly in countries like the UK, where the disease is still circulating at relatively significant levels.

    But in countries where overall caseloads are lower, and with rigorous test-and-trace schemes, it has been possible to pinpoint the factors that have sparked or fuelled local outbreaks.

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    Baldness and rashes? Experts split over unusual Covid-19 risk factors and symptoms

    Academics analyse whether hair and hearing loss may also be linked to coronavirus

    From hearing loss and rashes, to being tall and bald, as the Covid-19 pandemic develops, a host of new symptoms and risk factors are being linked to the virus. We take a look at the evidence.

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    Lifestyle changes could delay or prevent 40% of dementia cases – study

    Addressing 12 factors such as excessive drinking and air pollution exposure may have significant effect, experts say

    Excessive drinking, exposure to air pollution and head injuries all increase dementia risk, experts say in a report revealing that up to 40% of dementia cases worldwide could be delayed or prevented by addressing 12 such lifestyle factors.

    Around 50 million people around the world live with dementia, including about 850,000 people in the UK. By 2040, it has been estimated there will be more than 1.2 million people living with dementia in England and Wales. There is currently no cure.

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    Coronavirus: the four potential vaccines bought up by UK

    Britain takes its stockpile to 250m doses after most recent agreement

    Four potential Covid-19 vaccines have been secured so far by the UK, which aims to buy up to 12 to ensure that the country has one or more that work as soon as possible. They are:

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    Britain wins rare praise for leading race to test life-saving Covid drugs

    UK’s high infection rate and centralised NHS have enabled Recovery team to help victims across the world

    It has been a startling week for those following Britain’s response to the pandemic. Roundly derided for the lateness of its lockdown and its bungled testing programmes, the UK was the unexpected recipient of a sudden bout of lavish praise for its scientists’ efforts to combat the d isease.

    “The Brits are on course to save the world,” wrote leading US economist Tyler Cowen in Bloomberg Opinion, while the journal Science quoted leading international scientists who have heaped praise on British researchers’ anti-Covid work.

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    ‘Major’ breakthrough in Covid-19 drug makes UK professors millionaires

    Synairgen’s share price rises 540% on morning of news of successful drugs trial

    Three professors at the University of Southampton school of medicine have this week made a “major breakthrough” in the treatment of coronavirus patients and become paper millionaires at the same time.

    Almost two decades ago professors Ratko Djukanovic, Stephen Holgate and Donna Davies discovered that people with asthma and chronic lung disease lacked a protein called interferon beta, which helps fight off the common cold. They worked out that patients’ defences against viral infection could be boosted if the missing protein were replaced.

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    Coronavirus live news: California sees record daily cases as global infections top 15m

    California Covid-19 cases pass New York’s after record day; WHO emergencies chief says vaccinations unlikely before 2021; global cases pass 15m. Follow the latest updates

    The BBC reports that the coronavirus pandemic has pushed South Korea into a recession, with the country seeing a 2.9% fall in GDP:

    South Korea has fallen into recession as the country reels from the impact of the coronavirus pandemic.

    Asia’s fourth-largest economy saw gross domestic product (GDP) fall by a worse-than-expected 2.9% in year-on-year terms, the steepest decline since 1998.

    China plans to provide a $1bn loan to make its coronavirus vaccine accessible for countries across Latin America and the Caribbean, the Mexican foreign ministry said on Wednesday, Reuters reports.

    Mexico’s foreign ministry said in a statement that China had made the pledge in a virtual meeting between ministers from some Latin American and Caribbean countries.

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    Researchers say blood test can detect cancer years before symptoms

    Team based in China develop test that identifies cancers up to four years before signs appear

    A blood test can pick up cancers up to four years before symptoms appear, researchers say, in the latest study to raise hopes of early detection.

    A team led by researchers in China say the non-invasive blood test – called PanSeer – detects cancer in 95% of individuals who have no symptoms but later receive a diagnosis.

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    Matt Hancock hails ‘promising news’ on Oxford University coronavirus vaccine – video

    The health secretary, Matt Hancock, has welcomed the 'promising news' on Oxford University's coronavirus vaccine. 

    Researchers working on the experimental vaccine said it was safe and generated a strong immune response in the people who volunteered to help trial it, raising hopes it could contribute to ending the pandemic.

    'Very encouraging news. We have already ordered 100m doses of this vaccine, should it succeed,' Hancock said

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