Possible link between J&J Covid vaccine and rare blood clots, EU regulator finds

Watchdog says benefits outweigh risks but that warning should be added to product information

Europe’s medicines regulator has found a possible link between Johnson & Johnson’s coronavirus vaccine and rare cases of unusual blood clotting disorders it said were “very similar” to those that had occurred with the AstraZeneca shot.

The European Medicines Agency (EMA) on Tuesday recommended a warning should be added to the vaccine’s product information, but stressed that the benefits of the shot – whose rollout was paused last week in Europe and the US – outweighed its risks.

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UK in drive to develop drugs to take at home to ‘stop Covid in its tracks’

Ministers announce taskforce to ‘supercharge’ search for antiviral treatments to roll out as soon as autumn

People with mild Covid-19 could take a pill or capsule at home to prevent the illness turning serious and requiring hospital treatment, under government plans to fast-track development of treatments for the disease.

The government is launching an antivirals taskforce to find at least two drugs by the autumn that people can take to stop coronavirus in its tracks and speed up recovery from it.

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Middle-aged people who sleep six hours or less at greater risk of dementia, study finds

UCL data of 10,000 volunteers shows cases 30% higher among those who slept poorly in their 50s, 60s and 70s

People who regularly sleep for six hours or less each night in middle age are more likely to develop dementia than those who routinely manage seven hours, according to a major study into the disease.

Researchers found a 30% greater risk of dementia in those who during their 50s, 60s and 70s consistently had a short night’s sleep, regardless of other risk factors such as heart and metabolic conditions and poor mental health.

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The obscure maths theorem that governs the reliability of Covid testing

There’s been much debate about lateral flow tests – their accuracy depends on context and the theories of a 18th-century cleric

Maths quiz. If you take a Covid test that only gives a false positive one time in every 1,000, what’s the chance that you’ve actually got Covid? Surely it’s 99.9%, right?

No! The correct answer is: you have no idea. You don’t have enough information to make the judgment.

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Rapid Covid testing in England may be scaled back over false positives

Exclusive: In leaked emails, Matt Hancock’s adviser says there is ‘urgent need for decisions’ on asymptomatic testing

Senior government officials have raised “urgent” concerns about the mass expansion of rapid coronavirus testing, estimating that as few as 2% to 10% of positive results may be accurate in places with low Covid rates, such as London.

Boris Johnson last week urged everyone in England to take two rapid-turnaround tests a week in the biggest expansion of the multibillion-pound testing programme to date.

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Human cells grown in monkey embryos reignite ethics debate

Scientists confirm they have produced ‘chimera’ embryos from long-tailed macaques and humans

Monkey embryos containing human cells have been produced in a laboratory, a study has confirmed, spurring fresh debate into the ethics of such experiments.

The embryos are known as chimeras, organisms whose cells come from two or more “individuals”, and in this case, different species: a long-tailed macaque and a human.

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Neglected tropical diseases are the landmines of global health | Albert Picado and John H Amuasi

They are 20 disparate diseases that, like mines, unduly affect the world’s poorest people. Now there’s a plan to eradicate them by 2030

In January the World Health Organization launched a new strategy for eradicating neglected tropical diseases, boldly setting targets to eliminate 20 of them by 2030.

But what are neglected tropical diseases (NTDs)? There is no easy answer. The concept was first proposed in the early 2000s to bring to light a group of diseases that disproportionately affect poor people yet, despite their collective impact, do not attract as much attention as diseases such as HIV/Aids, malaria or tuberculosis.

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How UK doctor linked rare blood-clotting to AstraZeneca Covid jab

Prof Marie Scully developed a diagnostic test at University College London hospital after seeing rare side-effect in patient

Marie Scully was alarmed and puzzled. “It didn’t make sense,” she said. The consultant haematologist at University College London hospital (UCLH) had seen patients with blood clots in the brain and low platelets before and, although it was unusual, she always knew why. But there was no reason for the condition of the young woman in her 30s she was treating in early March.

“Now when you have blood clots in the brain like that there’s always a cause, and it was difficult to pinpoint the cause,” said Prof Scully. “It didn’t fit our normal diagnostic boxes, let’s say. She was a young woman with cerebral venous sinus thrombosis, and she had a low platelet count.”

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AstraZeneca blood clotting: what is this rare syndrome and how is it caused?

Evidence is growing of a link between the Covid-19 vaccine and a deadly thrombosis – and theories are emerging as to why

Since rare but severe clotting was seen in some people following vaccination with AstraZeneca’s Covid-19 vaccine, researchers worldwide have been grappling to understand why the clotting syndrome, known as “thrombosis with thrombocytopenia” (clotting with a low platelet count), occurs.

Most cases of these clots occurred in veins in the brain (a condition called cerebral venous sinus thrombosis, or CVST), though some occurred in other veins, including those to the abdomen (splanchnic vein thrombosis). It has a high death rate.

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Early findings show new drug could be ‘gamechanging’ for brain cancer treatment

Using ipatasertib, researchers say some brain cancers could potentially be made vulnerable to immunotherapy agent

Two people with advanced brain cancer of the sort that led to the death of the MP Tessa Jowell have responded well in a small trial to an experimental combination of chemo and immunotherapy drugs. In one case, the life-threatening tumour seems to have disappeared.

Doctors at the Institute of Cancer Research and the Royal Marsden hospital in London cautioned that this was very early research but said it was unusual to have such a good response in patients in an early trial.

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Is vaccinating against Covid enough? What we can learn from Chile and Israel

Contrasting lessons from the two countries, both with high rates of inoculation against the virus, show the danger is not past

A trio of countries stand out for the effectiveness of their Covid-19 vaccination programmes: Israel, Chile and the UK. All have managed to inoculate an impressively high percentage of their people but each has fared very differently in controlling the disease.

Israel has done so well it is resuming university lectures, concerts and other mass gatherings and has opened up its restaurants and bars. By contrast, Chile is experiencing soaring levels of Covid cases and faces new lockdown restrictions.

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Coronavirus Australia live update: Scott Morrison announces 20m more Pfizer vaccine doses after problems with AstraZeneca-led rollout

Vaccine rollout faces delays as authorities scramble to secure alternatives to AstraZeneca such as Pfizer for under-50s over blood clot fears. Follow updates live

Labor MP Josh Burns has criticised the government for failing to deliver vaccines to aged care staff and residents, noting the issue is unrelated to fresh concerns about the AstraZeneca vaccine causing blood clotting in those under 50.

Burns’ comments follow reports in the Guardian this morning that the federal government is expected to miss a self-imposed target on delivering “pop-up” hubs to vaccinate critical aged care staff and has given no details on the proposal to workers, despite multiple requests for information and meetings from the nursing union.

We’ve not had any federal aged care providers in Macnamara receive their vaccinations or have any indication on what day they are going to be having them, not to mention the staff that are still vulnerable and haven’t been vaccinated.

The frustration that Australians rightly have is that the promises that have been made have not been made by the Labor Party, they’ve been made by Greg Hunt, they’ve been made by Scott Morrison, they’ve been telling Australians that they’ve got it under control, that all is well, they are going to be vaccinating Australians and they haven’t been.

Related: Australia’s aged care nurses still in the dark about promised ‘pop-up’ vaccination hubs

Women need more information about contraceptive options, experts said, after concerns over rare blood clots linked to the AstraZeneca Covid jab prompted a debate over side-effects caused by certain forms of the pill.

On Wednesday the UK’s Medicines and Healthcare products Regulatory Agency (MHRA) said that evidence that the jab could be causing a rare blood clotting syndrome was growing stronger. As a result the UK’s Joint Committee on Vaccination and Immunisation (JCVI) recommended that healthy people under the age of 30 who were at low risk of Covid should be offered a different vaccine if possible.

Related: Contraception blood-clot risk: ‘public need better access to advice’

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Brazilian Covid variant: what do we know about P1?

What threat does variant that is causing devastation in Brazil pose, and how is it different?

The P1 variant is causing devastation in Brazil, where an uncontrolled Covid pandemic is raging. P1, behind the terrible scenes of hospital overload in Manaus with patients’ relatives pleading for oxygen cylinders, is now the dominant form of coronavirus in many of Brazil’s cities and partly responsible for the high death toll. Other Latin American countries have closed their borders and restricted travel to and from Brazil but P1 is now in at least 15 countries in the Americas, according to the Pan American Health Organization (PAHO).

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AstraZeneca Covid vaccine: weighing up the risks and rewards

Despite scientific advice to continue getting the jab, answers about fatal blood clots are urgently needed

Vaccines have side-effects, as do all medicines. Most often, jabs cause sore arms, a headache or a bit of nausea – none of which would be very significant when weighed against the toll of a serious virus such as Covid-19.

But sometimes the risk-benefit calculation may look less simple, as in the case of Oxford/AstraZeneca’s Covid jab and cerebral venous sinus thrombosis (CVST), the blood clots in the brain that have led to fatalities in the UK and Europe.

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First US trachea transplant offers hope to Covid patients with windpipe damage

  • Social worker, 56, treated at Mt Sinai hospital in New York
  • Some patients left with serious damage from ventilators

Surgeons in New York City have performed the first windpipe transplant in the US, giving a woman who suffered severe asthma a new trachea, the tube that transports air from the mouth to the lungs.

Doctors say such operations could help Covid-19 patients left with serious windpipe damage from breathing machines.

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Bat catchers fight the next pandemic – in pictures

Researchers at the University of the Philippines Los Baños aim to catch thousands of bats to develop a Japanese-funded simulation model over the next three years that they believe could help avert potential pandemics. They hope the bats will help in predicting the dynamics of a coronavirus outbreak by analysing factors such as climate, temperature and ease of spread

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Global rollout of vaccines is no longer a guarantee of victory over Covid-19 | Susan Michie, Chris Bullen, et al

New variants of concern have changed the game, spreading worldwide and threatening to derail pandemic control efforts

At the end of 2020, there was a strong hope that high levels of vaccination would see humanity finally gain the upper hand over Sars-CoV-2, the virus that causes Covid-19. In an ideal scenario, the virus would then be contained at very low levels without further societal disruption or significant numbers of deaths.

But since then, new “variants of concern” have emerged and spread worldwide, putting current pandemic control efforts, including vaccination, at risk of being derailed.

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The ‘elite controllers’ who can naturally suppress HIV

Research into how some HIV-positive people keep the virus at bay promises to yield new treatment possibilities, from vaccines to gene therapies

The year was 1998 when Joel Blankson encountered a patient he would never forget. Blankson was working in the HIV clinic at John Hopkins School of Medicine, Baltimore, when an HIV-positive woman in her mid-40s arrived for some routine tests.

Blankson gave her a PCR test, intending to prescribe a newly developed combination of medicines called antiretroviral therapies to suppress the infection, and prevent her developing Aids.

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Brazil records 70,238 new cases; Netherlands halts AstraZeneca jab for under 60s – as it happened

Country has registered more than 12.9 million cases; 10,000 appointments scrapped, reports Dutch news agency citing Netherlands health ministry

That’s it from the global blog team for now. Thanks for following our coverage, a new blog will be going live in a few hours.

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Pandemic 2020 review – a masterly mapping of the Covid outbreak

The team behind Once Upon a Time in Iraq has compiled a moving and sometimes hopeful three-parter that offers a global perspective on the crisis

Like the virus itself, the programmes about it have moved from localised subjects to a slightly wider field and now have expanded to take in a global view. It hasn’t been a perfectly linear progression, of course, but most of the first documentaries were composed largely of footage recorded by medical professionals themselves, at work and then – exhausted and tearful – at home.

After that came socially distanced films recording the impact on local communities and bereaved families, the experiences of survivors and the long-term consequences for those who do not make a full recovery. Alongside that have come considerations and critiques of the UK response to the crisis and comparisons – not generally favourable – with that of other countries.

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