Low-dose CT chest scans could help detect pneumonia in at-risk patients while exposing them to only small amounts of radiation, a new study has found. The research, published in Radiology: Cardiothoracic Imaging, shows that ultra-low-dose scans can effectively detect pneumonia in patients with compromised immune systems, enabling doctors to treat the infection before it becomes life-threatening. According to the researchers, these scans expose patients to just 2% of the radiation dose used in a standard CT scan.

"This study paves the way for safer, AI-driven imaging that reduces radiation exposure while preserving diagnostic accuracy,” lead researcher Dr Maximiliano Klug, a radiologist with the Sheba Medical Center in Ramat Gan, Israel, said in a news release. He added that CT scans are the gold standard for detecting pneumonia but there are concerns regarding the risk posed by repeated exposure to radiation. There is a solution- ultra-low-dose CT scan. However, the problem is that these scans can be grainy and hard to read, researchers said.

Study Gives Solution To This

To overcome that, Klug's team developed an AI program that could help "de-noise" low-dose scans, making them sharper and easier to read. Between September 2020 and December 2022, 54 patients with compromised immune systems who had fevers underwent a pair of chest CT scans -- a normal dose scan and an ultra-low-dose scan. The AI program cleaned up the low-dose scan, and then both sets of images were given to a pair of radiologists for assessment. Radiologists had 100% accuracy in detecting pneumonia and other lung problems with the AI-cleaned low-dose scans, but 91% to 98% accuracy in examining the scans that hadn’t been improved through AI, results show.

"This pilot study identified infection with a fraction of the radiation dose," Klug said. "This approach could drive larger studies and ultimately reshape clinical guidelines, making denoised ultra-low dose CT the new standard for young immunocompromised patients.

How Can You Detect Pneumonia?

Pneumonia is a lung infection that causes the air sacs in the lungs to fill with fluid or pus and can be caused by bacteria, viruses, or fungi. The symptoms can range from milk to severe, which includes:

Coughing with or without cough

Fever

Chills

Trouble breathing

Chest pain, especially when breathing deeply or coughing

Sweating or chills

Rapid heart rate

Loss of appetite

Bluish skin, lips, and nails

Confusion.

How to detect Pneumonia in coughing newborns and toddlers?

Pneumonia can severely affect newborns and young children as their lungs are comparatively more sensitive. As per Dr Goyal, young children can cough for various reasons including seasonal infections and tonsillitis, which is very common in this age group. But if they look visibly irritable and have poor sleep patterns, then parents must reach out to an expert. "I am not saying that parents must visit a hospital but any local paediatrician would be able to detect pneumonia in your kid.

A one-time gene-editing treatment has been reported to lower bad cholesterol (LDL) by as much as 62% in an early clinical trial, raising hopes that high cholesterol could one day be treated without everyday pills.

The experimental treatment, VERVE-102, is designed to make a long-term genetic change in the liver. Researchers say it could eventually offer a new way of managing high cholesterol, although it is still years away from standard use. The latest results have been described as an “extremely exciting milestone” by researchers.

How Does The One-Time Treatment Work?

VERVE-102 targets a gene called PCSK9, which plays an important role in controlling how much LDL cholesterol circulates in the bloodstream.

The treatment uses base editing, a form of gene editing, to switch off the PCSK9 gene in liver cells. PCSK9 reduces the liver’s ability to remove LDL cholesterol from the blood.

By permanently disabling the gene, researchers hope to reproduce the effect seen in people who naturally have PCSK9 variants that keep their cholesterol low and their risk of coronary heart disease reduced.

The treatment is delivered through a single intravenous infusion containing the gene-editing machinery packaged inside a lipid nanoparticle.

Also read: How To Read Your Blood Test Results: A Simple Guide To What Your Numbers Mean

What Did The Trial Find?

The Phase 1b Heart-2 trial involved 35 adults with either heterozygous familial hypercholesterolaemia, an inherited condition that leads to high cholesterol, or premature coronary artery disease. Participants received a single infusion at different doses.

At the highest dose tested, LDL cholesterol fell by an average of 62%, while PCSK9 levels fell by as much as 88%. The reductions sustained during follow-up, with some being observed for up to 18 months.

The study was published in the New England Journal of Medicine, making the findings particularly notable because they provide the first clinical evidence that this type of in-body gene editing can produce a substantial and potentially durable cholesterol reduction.

Also read: Stopping Statins After 75 May Not Raise Death Risk In Low-Risk Adults: The Lancet Study

Could It Replace Statins?

The clinical trial was small and still early-stage. It was designed to examine safety and whether the treatment produces the expected biological effect, not to prove that VERVE-102 prevents heart attacks or strokes by lowering cholesterol. Researchers also need to understand the consequences of permanently altering PCSK9 over many years.

The trial did not report any serious adverse events related to the treatment or dose-limiting toxicities, although some participants experienced fatigue and other reactions.

Dr Riyaz Patel, a cardiologist at Barts Health NHS Trust and professor at University College London, said the early results provide encouraging evidence that PCSK9 base editing could eventually offer “substantial and durable” LDL reduction with a one-time treatment.

Statins and other cholesterol-reducing medicines generally require regular, continued treatment. VERVE-102 is attempting to change the liver’s system of regulating cholesterol.

That could be particularly useful for people who struggle to take medication consistently or whose cholesterol remains dangerously high despite existing treatments.

Despite the promising results, calling VERVE-102 a 'cure' for high cholesterol would be premature. Eli Lilly plans to begin a Phase 2 trial by the end of 2026, which should provide more information about the treatment’s safety, effectiveness and durability.

Men in the UK could face limited access to prostate cancer testing under updated guidance that gives GPs authority to decide if some men without symptoms should receive a PSA blood test.

The development comes after the UK Government rejected calls for routine prostate cancer screening for all men. It instead backed a targeted approach in which those at highest genetic risk would be considered first.

Why Is The UK Changing Prostate Cancer Testing Guidance?

Under existing NHS guidance, men aged 50 and over can request a PSA test after discussing the benefits and limitations with their GP.

The new guidance states that the decision to authorise PSA testing ultimately rests with the doctor. Recent reports suggested that the policy has sparked criticism from cancer charities and campaigners.

Regardless, a PSA test can find prostate cancer, but it cannot reliably tell doctors which cancers are dangerous and which may be manageable with treatment.

The UK National Screening Committee (UK NSC) concluded in May that routine screening of the whole male population could do more harm than good.

It said that for every 1,000 men aged 50 to 60 screened using PSA, up to two lives could be saved, but as many as 20 men could experience overdiagnosis.

Also read: Prostate Cancer: NHS England's New Precision Radiotherapy Offers Hope In Just 5 Sessions

Who Will Be Eligible For Regular Screening?

The UK NSC has recommended targeted screening every two years for a much smaller group who are more likely to get prostate cancer. It includes men in the age group of 45 to 61 who have a BRCA2 gene variant and a family history of breast, ovarian, pancreatic or prostate cancer.

Importantly, the committee did not recommend targeted screening for other groups at higher risk, including Black men or men with a family history but no BRCA2 variant. It said that more evidence is needed to take a call on those matters.

What Is A PSA Test?

PSA, or prostate-specific antigen, is a protein produced by prostate cells. Higher levels can be associated with prostate cancer. But they can also increase because of non-cancerous prostate enlargement or inflammation.

This means screening can produce false alarms and lead to biopsies or treatment that some men may never need. Cancer Research UK says PSA testing may also fail to detect some prostate cancers.

Also read: Testicular Cancer Warning: Be Vigilant About These Unnoticeable Signs, Doctor Warns

Why Are Black Men Ineligible Despite Being In Higher Risk Group?

Black men have a substantially higher risk of developing and dying from prostate cancer, but the UK NSC said there is currently insufficient evidence to establish whether routine screening of Black men would help.

At the same time, the UK Government has expanded access for Black men to the TRANSFORM prostate cancer screening trial, which is designed to find a better way of detecting clinically significant prostate cancer.

The change does not mean PSA testing is being banned. Men with symptoms or particular risk factors can still be assessed by their GP, and doctors can request testing when it is clinically appropriate.

The Ebola outbreak in the Democratic Republic of Congo (DRC) is expanding at a rapid pace. According to a senior United Nations humanitarian official, the virus now estimated to be claiming one life every 30 minutes.

Tom Fletcher, UN Under-Secretary-General for Humanitarian Affairs and Emergency Relief Coordinator, issued the warning on August 14, calling for urgent international response as the outbreak continues to overwhelm communities and health systems in the Democratic Republic of Congo.

“The outbreak is the fastest growing on record,” Fletcher said, according to reports, urging the international community to step up support.

The latest warning comes as the outbreak has crossed a grim milestone. According to Reuters, DRC had recorded 4,449 confirmed Ebola cases and 2,061 deaths as of August 11.

What Makes It One Of The Most Rapidly Spreading Ebola Outbreaks?

The outbreak was officially declared in mid-May, but WHO has since found evidence that transmission may have started months earlier. Early patients were reportedly misdiagnosed with illnesses such as malaria or typhoid, allowing the virus to spread before Ebola was identified.

Currently, the virus has also moved far beyond its epicentre in Ituri province. WHO reported in July that cases had spread across five provinces and 46 health zones, with the outbreak concentrated in Ituri but also affecting North Kivu, South Kivu, Haut-Uele and Tshopo.

More recent reporting indicates that the outbreak has now reached a sixth province, while more than 2,100 deaths have been reported.

Also read: Ebola 2026 Outbreak Spreading Faster Than Any Before, On Track To Become Deadliest: WHO Chief

DRC Ebola Outbreak Is Challenging To Contain

Apart from an overwhelmed healthcare system, conflict, uncontrolled population displacement, poor infrastructure, lack of protective equipment and mistrust of health authorities are making it harder for health workers to identify contacts and reach patients. Health workers have also gone on strike due to nonpayment of wages, which has further weakened the response.

Reports suggested that 60% to 70% of newly detected infections are occurring outside known contact chains, a crucial sign that indicates contact tracing is struggling to keep up with transmission.

Vaccine For Bundibugyo Ebola Strain

Also read: Ebola Death Toll Tops 2,000 In DRC: New Study Reveals Likely Source Of Bundibugyo Virus Outbreak

The widely used Ervebo vaccine targets the Zaire variant of Ebola, not Bundibugyo virus. WHO says there is currently no licensed vaccine or specific treatment for Bundibugyo virus, although several candidates are now being investigated.

WHO experts have recently recommended a clinical trial to determine whether Ervebo could provide some protection against Bundibugyo, after encouraging results in animal studies.

Meanwhile, clinical trials of potential vaccines and treatments are underway in affected areas.

Progress Made

Despite the challenges, WHO chief Dr Tedros Adhanom Ghebreyesus said significant progress has been made towards containing and eradicating the virus. It includes:

• More than 21,000 community health workers have been trained.
• Treatment centres, safe burial teams, laboratories and community engagement teams are operating across the affected provinces, reaching hundreds of thousands of people.
• A total of 886 patients have recovered, even without specific therapeutics and vaccines, which are progressing through trials.
• For the first time, two vaccines specifically designed against Bundibugyo virus have entered Phase 1 safety trials in humans.
• Two new animal studies of a vaccine against Zaire ebolavirus — the more common species — have shown promising evidence of cross-protection in animals, Tedros said.