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.

The hantavirus outbreak may no longer be confined to the luxury Dutch cruise ship MV Hondius, with health officials now assessing the possibility of wider exposure. Officials at the US Centers for Disease Control and Prevention (CDC) said that although no cases have been reported in the US so far, the agency is monitoring 41 people for possible exposure.

The 41 includes the 18 people evacuated from the hantavirus-hit ship from Spain’s Canary Islands.

Notably, of the 18 passengers evacuated, two were carried in the plane's biocontainment units out of an abundance of caution — one who tested positive and another considered a suspected case. They were quarantined at a special facility in Nebraska. The remaining 16 are being quarantined in Omaha and Atlanta.

Speaking to CNN from a biocontainment unit at the University of Nebraska Medical Center in Omaha, Dr. Stephen Kornfeld of Oregon said he “feels wonderful” and is not experiencing symptoms.

Spanish officials confirmed that after initially testing positive for hantavirus, Dr. Kornfeld has since tested negative twice for the disease, meaning no Americans currently have the illness, Forbes reported.

CDC Monitoring More People

However, an additional 16 people are being monitored by the CDC.

The new individuals were not on the cruise ship but were passengers on an April 25 flight to Johannesburg and were exposed to someone known to have been infected, said Dr. David Fitter, who is leading the CDC response to the outbreak, according to The New York Times.

Also read: Shocking Study Finds Andes Hantavirus Could Linger In Semen For Years, Pose Transmission Risk

Seven other passengers from the cruise ship had disembarked on April 24 in St. Helena, an island in the Atlantic Ocean, returned to the US on commercial flights, and are being monitored by state health departments.

As of May 14, there were no confirmed hantavirus cases in the United States, Dr. Fitter said.

“Our job is to ensure that we are monitoring and in contact with anybody that might have been on the flight this person had taken,” Dr. Fitter told reporters. The agency is “monitoring all Americans that potentially would have been exposed, whether in the US or abroad, and we have been in contact with them,” he said.

Hantavirus Outbreak: 11 Cases And 3 Deaths Reported

According to the World Health Organization (WHO), 11 people have been affected by the rat-borne virus so far, of whom three have died.

A Dutch couple is believed to have first been exposed to the virus while visiting a birdwatching site in Argentina.

The WHO has confirmed that the Andes strain of hantavirus — the only strain known to spread from person to person — is behind the outbreak.

While all passengers onboard the cruise have been taken care of by health authorities, the virus’ long incubation period remains a serious concern. This means that even asymptomatic individuals could potentially become infectious 6-8 weeks later.

WHO Guidelines On Hantavirus Exposure

The WHO recommends that people exposed to hantavirus should be:

• Monitored actively at a specified quarantine facility
• Monitored at home for 42 days from the last exposure

The UK is witnessing yet another outbreak of meningitis, with one college student dead and two others infected in Berkshire, according to the UK Health Security Agency (UKHSA).

According to the agency, close contacts of those affected are being offered antibiotics as a precautionary measure.

Also Read: Why Rebranding PCOS As PMOS Could Mark A New Era In Women’s Health

While stressing that the risk to the wider public remains low, the UKHSA confirmed that one case has been identified as Meningitis B (MenB), while further testing is ongoing.

The latest infections come after a small number of meningitis B cases were reported in the Weymouth region in April, followed by a major outbreak in Kent in March that affected more than 30 people and led to the deaths of a sixth-form pupil and a university student.

What’s The Meningitis Situation In Reading?

The young person who died attended The Henley College, according to a local GP surgery.

Authorities are reportedly sharing information about the infection with students and parents at affected schools. The other two cases are believed to be linked to schools in the Reading area. But the officials are yet to disclose the exact link.

Health officials said close contacts of the infected individuals are being offered antibiotics as a precaution.

Read More: Hantavirus Outbreak: Critically Ill French Patient On Artificial Lung Support

GP surgery, the Hart Surgery, based in Henley-on-Thames, stated that it was in contact with the UKHSA due to the college’s location, adding that the agency was “actively contacting those who may be at risk due to a close association with the student involved.”

However, it said anyone whom the UKHSA has not contacted does not require treatment, and students and staff can continue attending the sixth-form college as usual.

“The number of confirmed cases is very low, so there are currently no plans for a local emergency meningitis vaccination programme,” it added.

Also read: UK Reports Meningitis Outbreak Among School Children: All You Need To Know

What Is Meningitis?

Meningitis is a serious medical condition that affects the protective membranes covering the brain and spinal cord, known as the meninges. Fever is often considered one of the classic symptoms, although it may not always be present.

Understanding the symptoms, causes, and treatment options is important for early diagnosis and timely medical care.

“Anyone can get meningitis, and around 300 to 400 cases of meningococcal disease are diagnosed in England every year. It is most common in babies, young children, teenagers, and young adults," said Dr Rachel Mearkle, a consultant in health protection at the UKHSA.

“It needs to be treated quickly, so it is important to know the signs and symptoms. They can appear in any order and may not all be present, so seek rapid medical attention if there is ever any concern," she added.

The expert noted that "meningococcal meningitis requires very close contact to spread, and large outbreaks such as the one recently seen in Kent are thankfully rare."

“Meningococcal disease does not spread easily, and the risk to the wider public remains low.”

Symptoms Of Meningitis

Health officials urged the public to remain alert to the warning signs of meningococcal meningitis. Common symptoms include:

• Rash
• Headache
• Neck stiffness
• Fever
• Drowsiness
• Nausea or vomiting
• Increased sensitivity to light

“If the disease is suspected, immediate medical attention should be sought, as it can progress rapidly,” the officials said. While antibiotics provide the quickest short-term protection, vaccines offer longer-term protection.

Pancreatic cancer has long been one of the toughest challenges in oncology. With a five-year survival rate hovering around 13 per cent and recurrence rates approaching 80 per cent after treatment, the odds have historically been stacked against patients.

However, an experimental drug called daraxonrasib, developed by the US-based late-stage clinical oncology company Revolution Medicines, has shown promise in improving survival rates in patients with metastatic pancreatic ductal adenocarcinoma (PDAC).

“For patients with metastatic pancreatic cancer, new treatment options are urgently needed to increase survival time and improve quality of life,” said Brian M. Wolpin, professor of medicine at Harvard Medical School, and principal investigator for the trial.

Wolpin noted that the study “indicates that daraxonrasib provides a clear and highly meaningful step forward for patients with pancreatic cancer who have experienced progression on prior treatment, typically chemotherapy.”

What Is Daraxonrasib?

Daraxonrasib is a once-daily oral pill that demonstrated statistically significant and clinically meaningful improvements in progression-free survival (PFS) and overall survival (OS) compared with standard intravenous chemotherapy.

Daraxonrasib, described as a multi-selective inhibitor of RAS(ON) proteins, is the first investigational drug in a new class of RAS inhibitors designed to target a broad spectrum of cancer-causing RAS mutations.

In the clinical trial, daraxonrasib showed a median overall survival of 13.2 months, compared with 6.7 months for chemotherapy.

The drug was generally well tolerated and showed a manageable safety profile, with no new safety concerns identified.

Daraxonrasib works by blocking KRAS signalling proteins that drive tumor growth.

Pancreatic cancer is considered one of the most RAS-addicted cancers, with more than 90 per cent of patients carrying tumours driven by RAS protein mutations.

Also read: Former US Senator Ben Sasse Opens Up About Battle With Terminal Stage 4 Pancreatic Cancer

Daraxonrasib: The Clinical Trial

The controlled Phase 3 clinical trial evaluated daraxonrasib in patients with previously treated metastatic PDAC.

The trial included patients with pancreatic tumours carrying a wide range of RAS variants, as well as patients without identified RAS mutations.

The results showed that daraxonrasib significantly improved overall survival in patients with previously treated metastatic pancreatic cancer.

Similar RAS-targeting drugs are now being developed by other companies for pancreatic, lung, and colon cancers.

“It’s the beginning, not the end,” said Elizabeth Jaffee in comments to The New York Times.

What are the side effects?

According to the company, “Daraxonrasib was generally well tolerated, with a manageable safety profile and with no new safety signals.”

Prior studies with daraxonrasib have shown that rash is the most common side effect, with mouth sores, diarrhea, nausea, and vomiting also common.

Also read: India Gets Its First Alzheimer’s Drug: Know All About Eli Lilly’s Lormalzi

FDA fast-tracks Daraxonrasib

Based on the first interim analysis, all progression-free survival and overall survival results are now considered final.

Revolution Medicines said it plans to submit the data to global regulators, including the US Food and Drug Administration (FDA), as part of a future New Drug Application under a Commissioner’s National Priority Voucher.

The findings are also expected to be presented at the 2026 American Society of Clinical Oncology (ASCO) Annual Meeting.

What Is Pancreatic Cancer? Know The Warning Signs

Pancreatic cancer typically begins in the ducts of the organ and can rapidly spread from there to the rest of the organ. Early-stage pancreatic tumors do not show up on imaging tests, making this version of the disease difficult to diagnose until it infects other organs.

The prevention and early detection remain vital.

Experts warn that pancreatic cancer often masquerades as common ailments, delaying diagnosis. Here are some early symptoms that should never be ignored:

• Abdominal or back pain that worsens over time or eases when leaning forward.
• Unexplained weight loss without changes in diet or exercise.
• Jaundice, including yellowing of the eyes and skin, sometimes with intense itching.
• Changes to urine or stool, such as dark urine or pale, greasy stools.
• New-onset diabetes without obvious risk factors.
• Persistent fatigue unrelated to poor sleep or lifestyle