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.

Tennis legend Novak Djokovic has opened up about a longstanding health issue he has been dealing with for years.

At the Cincinnati Open, the Serbian, who holds the all-time men's record of 428 weeks as world No. 1 in singles, struggled physically throughout his second-round match.

The 39-year-old was seen crouching on all fours between points, required a medical timeout and appeared to vomit into towels as extreme heat and humidity took a toll.

The 24-time Grand Slam champion suffered a surprising second-round defeat, losing to Argentina's Thiago Agustín Tirante 2-6, 6-4, 6-4.

What Health Issue Does Novak Djokovic Have?

Following the defeat, Djokovic revealed that he has been dealing with a longstanding health condition that becomes particularly difficult to manage in hot and humid conditions.

"It's because of a health issue I have," Djokovic told reporters after the match. "I've been dealing with it for many years now. It causes me a lot of problems, especially when there's a lot of humidity and heat."

Djokovic said he had anticipated difficult conditions in Cincinnati, but the combination of heat, humidity, nerves and other factors ultimately made the situation worse during his match against Tirante.

His physical struggles also raised questions about his future at the Cincinnati Open. Asked whether he planned to return to the tournament in 2027, Djokovic gave an uncertain response.

"I certainly hope so, but unfortunately, at this point it seems more likely that I won't. However, we'll see what the future holds."

Novak Djokovic's Previous Health Issues and Injuries

Djokovic has dealt with several injuries and health challenges throughout his career.

• Respiratory issues: Before 2010, Djokovic faced heat exhaustion, breathing difficulties and physical collapses. He later changed his diet after identifying gluten and dairy intolerance.

• Elbow injury: Chronic right elbow problems led to surgery in 2018.

• Abdominal tear: He played through an abdominal tear to win the 2021 Australian Open.

• Hamstring injury: He battled a left hamstring injury during his 2023 Australian Open title run.

• Knee injury: A torn meniscus forced him to withdraw from the 2024 French Open.

Djokovic on the Physical Demands of Ageing

In 2023, Djokovic acknowledged that his body was beginning to feel the effects of a long career, although he still felt he had fuel left in the tank.

"I am being completely honest with you guys. I have asked this question also, but it's not like I think about it all the time.

The desire is still there, but things can change quickly – I am 36, I've been a pro for 20 years."

He said he did not view age as a decisive factor, instead focusing on his overall physical condition and whether he continued to enjoy playing.

Age can affect tennis performance through changes such as reduced muscle mass, slower recovery and lower aerobic capacity, which can also increase injury risk. However, modern sports science and tactics can help players remain competitive as they age.

Research suggests that people who regularly play tennis may add nearly 10 years to their lives, potentially outperforming the longevity gains associated with several other sports.

"Tennis is a sport that is unique because people of all ages play it, from age two to 92 or older, and that makes it accessible to a lot of people," Dr. Melissa Leber, director of emergency department sports medicine at Mount Sinai Health System, told the New York Post.

The Ebola outbreak in the Democratic Republic of Congo (DRC) has become the deadliest one in the country’s history, with the death toll reaching 2,325, according to the latest reports.

The number has now surpassed the 2,299 deaths recorded during the 2018–2020 Ebola outbreak, which had previously been the country’s worst. The current outbreak has also become the largest in the DRC by number of confirmed cases, with 4,945 infections recorded so far.

The latest figures indicate that the outbreak has reached another grim milestone just three months after it was officially declared on May 15.

Ebola Is Spreading Rapidly

The DRC’s National Public Health Institute reported 101 new confirmed cases in the 24 hours leading up to its latest update, highlighting how quickly transmission is continuing.

The outbreak was first detected in Ituri province, but the virus has since spread to six provinces, including North Kivu, South Kivu, Haut-Uele, Tshopo and Bas-Uele. More than 3,400 cases have been reported in Ituri alone.

The United Nations has described the outbreak as the fastest-growing Ebola epidemic on record.

“Ebola is winning in the Democratic Republic of the Congo. We cannot let the virus outrun our response,” UN humanitarian chief Tom Fletcher said, calling for “speed, scale, and solidarity” before the outbreak gets even further ahead of containment efforts.

Also read: Ebola Outbreak Is Claiming 1 Life Every 30 Minutes In DR Congo: UN Humanitarian Official

The Most Deadly Outbreak

One of the biggest reasons behind rapid transmission is that people are still being diagnosed too late. Thomas Parisch, a public health specialist with Médecins Sans Frontières, said that normally the proportion of people dying should fall as outbreaks progress because contact tracing improves and patients receive treatment earlier.

“Instead, we're still seeing many cases detected very late,” he said, with some infections only being identified after patients have died in their communities.

The case-fatality ratio has climbed from around 20% in early June to approximately 46%, according to Reuters.

That does not mean the virus itself has become more lethal. Rather, the increase is a warning that many patients are reaching healthcare facilities too late for treatment to be effective.

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

No Approved Vaccine

The current outbreak is being caused by the Bundibugyo species of Ebola, a relatively rare strain.

Unlike the Zaire species responsible for several previous major Ebola outbreaks, Bundibugyo currently has no approved vaccine or specific treatment. WHO says experimental vaccines and treatments are being investigated, but they remain under evaluation.

This makes early diagnosis, isolation, contact tracing and supportive medical care particularly important.

The outbreak is also unfolding in an extremely difficult environment. Conflict, population movement, weak healthcare infrastructure, misinformation and shortages of resources are making it harder for health teams to identify and isolate infections quickly. Health workers have also demonstrated strikes due to unpaid wages.

Also read: Amid Rapidly Expanding Ebola Outbreak, DR Congo Is Seeing An Alarming Increase In Maternal Deaths; Here's Why

Efforts Towards Containing The Outbreak

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.

In an early trial, scientists are testing the possibility if a vaccine could intercept pancreatic cancer, one of the deadliest cancers in the US, at an early stage and prevent it from becoming invasive.

The trial involves people who were considered at high risk of pancreatic cancer and already had small abnormalities, like cysts, in their pancreas.

The experimental vaccine, called mKRAS-VAX, is designed to train the immune system to recognise mutated KRAS proteins, which are found in most pancreatic ductal adenocarcinomas, the most common type of pancreatic cancer.

The findings, published in Cancer Discovery, offer an intriguing new approach in which instead of waiting for pancreatic cancer to appear and then treating it, researchers are attempting to intercept the disease at its earliest stages.

How Does The Vaccine Work?

Also read: UK Set To Implement Stricter Protocol For Prostate Cancer Testing; Who Is Eligible To Get Tested?

Pancreatic cancer often develops gradually from precursor lesions. Some of these lesions can contain mutations in the KRAS gene, which can drive the development of the disease.

The mKRAS-VAX vaccine contains synthetic peptides targeting six common KRAS mutations. The goal is to teach T cells to recognise cells carrying these abnormal proteins and destroy them before they progress into cancer.

Unlike traditional vaccines against infections, this is a therapeutic cancer vaccine, meaning it is designed to stimulate the patient's immune system against targets related to cancer.

Findings From The Early Trial

Also read: Following A Western Diet? Changes In Your Gut Bacteria Could Increase Colon Cancer Risk

The Phase 1 study involved 20 people who had either a family history or genetic predisposition to pancreatic cancer and had a pancreatic abnormality detected on imaging.

The vaccine produced mutant-KRAS-specific T-cell responses in 18 of the 20 participants, or 90%. These immune responses persisted for as long as two years. Researchers also saw an intriguing change in pancreatic cysts.

At a median follow-up of 16.5 months, 37.5% of participants experienced cyst reduction or complete resolution. Among a comparable group of unvaccinated people, the figure was 6.8%.

None of the vaccinated participants had developed pancreatic ductal adenocarcinoma during the study follow-up. However, this does not prove that the vaccine prevents pancreatic cancer.

The study was small, early-stage and primarily designed to examine safety and whether the vaccine could generate an immune response.

“We are very excited about these results,” pancreatic cancer vaccine researcher Elizabeth Jaffee said.

More About Pancreatic Cysts

The researchers are interested in whether vaccination could intervene during this window, before malignant cells are formed.

That is particularly significant because pancreatic cancer is notoriously difficult to detect early and remains one of the deadliest cancers.

The long-term ambition is to develop a vaccine to prevent pancreatic cancer but researchers are not there yet.

Jaffee described the field as “nascent” and said she is “cautiously optimistic,” while emphasising that these small Phase 1 studies are not designed to establish whether the vaccines improve survival or prevent cancer.

Larger Phase 2 studies will be needed to determine whether the early immune responses translate into meaningful clinical benefits.