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 Ebola outbreak in DR Congo has risen to 1,427 cases, while the death toll has climbed to 440, according to the latest government data.

More than 609 patients are hospitalized in Congo, while many have also recovered. Uganda has so far reported 20 confirmed cases and two deaths. There has also been one case in France and another in a US citizen medically evacuated to Germany, both believed to have been imported from areas affected by the ongoing outbreak.

The Ebola virus disease, caused by the Bundibugyo strain, has no approved vaccine or treatment.

"Even without approved therapeutics, people are recovering from this disease, but, of course, we could save many more lives with safe and effective therapeutics in our toolkit," said Dr Tedros Adhanom Ghebreyesus, WHO Director-General.

He said this while announcing the launch of the clinical trial of two therapeutics, with the enrolment of the first patient.

"The PARTNERS trial will evaluate the monoclonal antibody MBP134 and the antiviral drug remdesivir, alone and in combination," he added.

Also read: Donald Trump Posts AI Video of Himself Treating Critics for 'Derangement Syndrome'

All About the Trial

The study is being coordinated by the DRC's National Institute for Biomedical Research, supported by a coalition of partners including WHO, and conducted in close cooperation with the affected communities.

According to Tedros, patients who enroll in the trial will receive comprehensive supportive care and close follow-up.

"We are also working to ensure they have access to the two drugs should they prove safe and efficacious in the trial."

In addition, the WHO has granted emergency use listing to the first molecular diagnostic test for Bundibugyo virus.

Further, the antiviral drug remdesivir, marketed as Veklury is also expected to start. Remdesivir became widely known during the COVID-19 pandemic and is being evaluated to determine whether it can improve outcomes when combined with the antibody treatment.

As per experts, it could take months, and possibly as many as 1,000 study participants, to determine whether either drug works.

Currently, the study is being offered only at one Ebola treatment center in Congo's Ituri province. The region has been heavily affected by violence, including attacks on healthcare workers responding to a virus spread through contact with infected patients' bodily fluids. Officials plan to expand the trial to other locations once it is safe to do so.

Read More: Australia Reports More H5 Bird Flu Cases: Does It Have Pandemic Potential?

Challenges Remain

Tedros said that despite the progress, significant challenges remain, including mistrust and violence.

This week, an Ebola treatment center in Ituri province was attacked, resulting in the deaths of two people. The center was set on fire, and patients fled.

Such acts not only endanger patients and health workers but also impede efforts to stop transmission and save lives.

He added that the complexity of the outbreak requires close coordination across the United Nations system.

What Is Ebola?

Ebola is a severe and often fatal viral hemorrhagic fever first identified in 1976. Since then, more than 30 outbreaks have been recorded, primarily in Central and West Africa.

Common Symptoms of Ebola

• Fever
• Headache
• Weakness and fatigue
• Vomiting
• Diarrhea
• Muscle pain
• Sore throat
• Unexplained bleeding or bruising.

Amid increasing conversations about Donald Trump suffering from dementia, the US President posted an AI-generated video of himself as a doctor diagnosing celebrities with what he calls "Trump Derangement Syndrome (TDS)."

The clip features AI recreations of Hollywood actors and celebrities, including Whoopi Goldberg, Robert De Niro, Julia Roberts and Rosie O'Donnell, all of whom have previously criticized Trump.

"Have you or someone you know been diagnosed with TDS?" the AI Trump asks at the start of the clip posted on Truth Social.

Calling the "symptoms relentless," the 80-year-old President said that "fortunately, I'm Doctor Trump, and I have a treatment plan," The Independent reported.

Trump's AI Patients Share Their Symptoms

The AI-generated Trump then invited viewers to hear from some of his "patients."

"I couldn't eat, I couldn't sleep, constantly angry…" the fake De Niro said. "I made everyone miserable around me."

"I feel like I've aged 20 years in the last two years," added the AI version of Roberts, claiming that she was starting to "worry about her future."

The fake O'Donnell claimed that she had been "suffering for over a decade," while the AI Goldberg said she believed she was a "lost cause."

Other stars spoofed in the 90-second clip include actors Edward Norton and John Leguizamo, both of whom have criticized the president.

Also read: Norovirus Hits Princess Cruise Ship; US CDC Reports 5th Stomach Bug Outbreak of 2026

'Doctor Trump's Treatment Plan

At the end of the video, "Doctor Trump" revealed his "treatment" plan: "Turn off fake news."

He further instructed the AI patients to: "Say your prayers and, if you ever feel anxious, just have a Diet Coke like me and you're gonna see a remarkable difference in your life."

What Is Trump Derangement Syndrome?

READ: Scientific Breakthrough: US Scientists Create First Synthetic Cell That Eats and Reproduces

Trump has often labeled his detractors as having Trump Derangement Syndrome, even claiming in the Oval Office that he had heard it "actually is a disease."

The term is an adaptation of "Bush Derangement Syndrome," which was coined by columnist Charles Krauthammer in 2003.

Krauthammer described the term as "the acute onset of paranoia in otherwise normal people in reaction to the policies, the presidency—nay—the very existence of George W. Bush."

Trump's Health Under Scrutiny

Read More: New Book Examines Donald Trump's Health, Age Concerns; White House Responds

Trump, who became the oldest US president in history after turning 80 this year, has faced growing public scrutiny over his health.

Recent public appearances have prompted speculation after observers noted swollen ankles, bruising on his hands, verbal slips and occasional episodes in which he appeared drowsy during meetings and international summits.

Some physicians have also publicly expressed concerns about the president's physical and cognitive health, although none have diagnosed him with dementia.

But Trump has repeatedly rejected allegations of cognitive decline or other serious health issues. His most recent annual physical examination also concluded him to be "in excellent health."

The White House also maintains that: "President Trump is the sharpest and most accessible President in American history who is working nonstop to solve problems and deliver on his promises."

The US Centers for Disease Control and Prevention (CDC) has reported another norovirus outbreak aboard a Cruise ship that has sickened nearly 125 people.

So far this year, the CDC has reported seven outbreaks on cruise ships under its jurisdiction, five of which were caused by norovirus.

Nearly 125 People Fall Ill

The outbreak occurred aboard the Ruby Princess during a 20-day voyage along the west coast of North America.

According to the CDC, 102 passengers and 23 crew members reported gastrointestinal illness during the voyage.

The outbreak was first reported to the CDC's Vessel Sanitation Program on June 28.

The Ruby Princess was carrying more than 3,000 passengers and 1,144 crew members during the outbreak.

According to the CDC, Princess Cruises and the ship's crew implemented increased cleaning and disinfection procedures under the company's outbreak prevention and response plan.

Crew members also collected stool specimens from affected individuals for testing, isolated ill passengers and crew members, and consulted with the CDC's Vessel Sanitation Program.

Also read: Australia Reports More H5 Bird Flu Cases: Does It Have Pandemic Potential?

What Is Norovirus?

Norovirus is a highly contagious virus that causes gastroenteritis, leading to inflammation of the stomach and intestines.

Speaking to HealthandMe, epidemiologist Dr. Amitav Banerjee, professor at DY Patil Vidyapeeth, Pune, described norovirus as “notorious because it spreads very fast.”

“It can spread through fomites like handles and knobs, and even a very low infectious dose—around 18 viral particles—can cause infection. So it spreads very fast,” he said.

He added that while many common disinfectants are ineffective against it, norovirus can be inactivated using bleach and chlorine-based cleaning agents.

Is The Norovirus Outbreak Of Concern?

Although outbreaks can look alarming, Dr. Banerjee emphasized that norovirus infections are generally self-limiting.

“In the ship, it can be managed with oral rehydration, and in severe cases, IV fluids can help prevent complications and mortality,” he said.

Dr. Banerjee also clarified that, unlike diseases with pandemic potential, norovirus outbreaks—while explosive in nature—do not typically pose a long-term global threat.

"Norovirus is a stomach infection contracted through the consumption of contaminated food or water or through contact with an infected individual. The infection is highly contagious, but not life-threatening, and is manageable with proper care and hydration," Dr Suresh Kumar D, Senior Specialist - Infectious Diseases, Apollo Speciality Hospitals, Vanagaram, Chennai, told HealthandMe.

Who Is Most at Risk? What Are The Key Symptoms

Dr. Banerjee noted that extreme age groups, especially very young infants and the elderly, are at higher risk due to dehydration from diarrheal illness. However, deaths remain rare when proper care is provided.

Norovirus illnesses usually last between two and three days. Symptoms usually begin suddenly within 12 to 48 hours of exposure and may include:

• Nausea
• Vomiting
• Watery diarrhea
• Stomach cramps
• Low-grade fever
• Headache and body aches
• Fatigue

What You Can Do To Stop Its Spread

Because of how fast viruses spread, experts highly recommend preventive actions such as:

• Wash your hands frequently with soap and warm water, especially after using the toilet or before preparing food.
• Avoid visiting hospitals or care homes if experiencing symptoms.
• Stay home for at least 48 hours after symptoms subside to prevent spreading the virus.