Cancer is a large group of diseases that can start in almost any organ or tissue of the body when abnormal cells grow uncontrollably, and go beyond their usual boundaries to invade adjoining parts of the body. According to the World Health Organization (WHO), it is the second most common cause of death globally, accounting for millions of deaths every year. Lung, prostate, colorectal, stomach and liver cancer are the most common types of cancer in men, while breast, colorectal, lung, cervical and thyroid cancer are the most common among women. However, these are not necessarily the deadliest forms of cancer.

What makes cancer the deadliest depends upon how many people have it and what percentage of those people actually survive. Cancer researchers determine this on the basis of five-year relative survival. This is the percentage of people who are expected to survive the effects of a given cancer, excluding their risk of other possible causes of death, for five years past a diagnosis. It is also important to note that what makes cancer really deadly is that practically no cure for it. A cure for cancer would imply that there are no cancerous cells remaining in the body.

Here are the 5 deadliest cancers in the U.S., according to SEER five-year relative survival data for cases diagnosed between 2014 and 2020.

1. Pancreatic cancer occurs when cells in your pancreas, a gland in your abdomen that aids digestion, mutate and multiply out of control, forming a tumour. Major risk factors include smoking, obesity, diabetes, chronic pancreatitis, certain genetic mutations and environmental chemical exposure.

2. Esophageal cancer develops in the oesophagus, which is the tube that connects your throat to your stomach.

3. Liver cancer and intrahepatic bile duct cancer originate in the liver or bile ducts, often linked to hepatitis infections, heavy alcohol use, obesity, and aflatoxin exposure.

4. Lung and bronchus cancer primarily caused by smoking, secondhand smoke, and environmental pollutants, affects the lungs and airways, making it the leading cause of cancer death in the US.

5. Acute myeloid leukaemia (AML) is an aggressive blood and bone marrow cancer that progresses rapidly, often linked to genetic mutations, radiation exposure, and certain chemicals.

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The United States is once again witnessing a surge in norovirus infections, a highly contagious gastrointestinal illness that causes severe vomiting and diarrhea.

Media reports noted that hikers along Southern California's Pacific Crest Trail have been hit by a fast-spreading outbreak of what is often referred to as the "winter vomiting disease".

At least two dozen hikers have fallen ill along the trail over the past two weeks, resulting in at least one air rescue. Health officials believe the cases are linked to norovirus, USA Today reported.

Wastewater Data Shows Rising Activity

According to data from WastewaterSCAN, a Stanford University-led program that tracks disease activity through wastewater testing, norovirus activity was "high" and on an upward trend nationwide in late May.

The surveillance data showed norovirus was detected in 100 per cent of samples collected during May, with concentrations particularly high in the Northeast and Midwest regions of the country.

CDC Reports Increase In Cases

Also read: Western Australia Records 22 Mpox Infections In 2026; Seven Reported Last Week

In addition, the latest data from the US Centers for Disease Control and Prevention's National Respiratory and Enteric Virus Surveillance System also showed that norovirus cases have increased over several weeks following a sharp seasonal decline that began in March.

About 11.2 per cent of administered norovirus tests returned positive during the week ending April 28. That figure rose to 12 per cent in the week ending May 2.

Norovirus is commonly associated with the colder months, when respiratory illnesses such as flu and the common cold are widespread.

However, health experts note that late-spring increases in norovirus activity are not unusual, and outbreaks can occur throughout the year due to the virus's highly contagious nature, the report said.

What Is Norovirus And Its Common Symptoms?

Norovirus causes viral gastroenteritis, sometimes called “stomach flu” or a “stomach bug,” though it isn’t related to influenza. As per Mayo Clinic, it consists of several strains of RNA viruses that inflame the stomach and intestines, causing nausea, vomiting, and diarrhea.

Symptoms usually appear one to two days after exposure and often include:

• Nausea
• Vomiting (non-bloody)
• Watery diarrhea
• Stomach cramps
• Dehydration (rare but possible)
• Fever
• Headache
• Body aches

Most people recover within one to three days, though they can still spread the virus for up to two weeks after feeling better.

Read More: John Barnes, Bobby Davro Diagnosed With Prostate Cancer Even As UK Rules Out Universal Screening

Who Gets Norovirus?

Anyone can get infected. Norovirus is the leading cause of acute gastroenteritis in the US, affecting all ages. Young children, older adults, pregnant people, and individuals with existing health conditions are more vulnerable.

How Does Norovirus Spread?

Norovirus spreads very easily. It survives well in the environment, and only a minuscule amount is enough to infect someone. In fact, just a few particles on the head of a pin can infect over 1,000 people.

Exposure can happen through:

• Eating contaminated water or food, especially leafy greens, fresh fruit, and shellfish like oysters
• Contact with vomit or fecal particles from someone who is infected, either by touching them directly or by touching contaminated surfaces, utensils, or toys.

Two researchers working at the National Institutes of Health (NIH) have been charged with allegedly bringing a deactivated mpox virus into the United States from the Republic of the Congo without a permit.

In a statement, the Department of Justice said Vincent Munster and Claude Kwe, from the NIH's Rocky Mountain Laboratory, were charged in a criminal complaint with conspiracy to smuggle monkeypox into the United States and making false statements to federal law enforcement agencies.

"These NIH experts apparently broke our laws by smuggling viral pathogens on a packed commercial airplane from an outbreak in the Republic of Congo. Let that sink in," said United States Attorney Jerome F. Gorgon Jr.

Who Are The Researchers?

According to the criminal complaint, Vincent Munster, 53, a citizen of the Netherlands, is the Chief of the Virus Ecology Section in the Laboratory of Virology at the Rocky Mountain Laboratory in Hamilton, Montana.

Claude Kwe, 38, a citizen of Cameroon, is a research fellow in Munster's section.

Both researchers worked on emerging viral pathogens and how those pathogens cross the species barrier. They work at a Biosafety Level 4 laboratory, which employs the highest level of biosafety precautions for scientific research involving known and potential human pathogens.

Also read: Western Australia Records 22 Mpox Infections In 2026; Seven Reported Last Week

What Did The Researchers Allegedly Carry?

According to the US Department of Justice, the researchers were carrying a large black plastic case containing 113 vials when they arrived at Detroit Metropolitan Airport from the Republic of the Congo on January 25, this year. Congo was experiencing a monkeypox outbreak at the time.

Customs and Border Protection (CBP) officers inspected and interviewed the researchers, who were carrying a large black plastic case.

"Munster and Kwe falsely told CBP officers that the black case contained diagnostics and testing equipment," the Department of Justice alleged. But when the FBI and CBP inspected the case and found 113 vials.

As per the investigators:

• 17 of the first 20 tested vials contained deactivated mpox virus
• 1 vial contained chickenpox virus
• 2 vials contained human DNA

Investigation Ongoing

"No researchers should believe their positions, credentials, or professional status place them above the law," said Jennifer Runyan, Special Agent in Charge of the FBI Detroit Field Office.

"The allegations in this case are serious. They involve the dangerous and unlawful smuggling of deactivated Mpox virus into the United States and alleged efforts to mislead our federal agents," she added.

Read More: Bangladesh's Measles Crisis Deepens: Nearly 600 Children Dead Since March, Infections Set To Surge

Marcus L. Sykes, Special Agent in Charge at the Department of Health and Human Services Office of Inspector General (HHS OIG), said that "any deliberate effort to conceal and smuggle biological materials into the United States without proper authorization was a breach of public trust and could have placed the public at risk".

As per the officials, Munster and Kwe each face a maximum sentence of five years in prison if convicted. The investigation remains ongoing.

What Is Mpox?

Mpox is a viral disease caused by the monkeypox virus, which belongs to the same family of viruses as smallpox.

The virus spreads through close physical contact with an infected person, contaminated materials, or infected animals.

The illness generally lasts between two and four weeks and resolves on its own. However, severe disease can occur, particularly in children, pregnant women, and people with weakened immune systems.

Complications may include secondary infections, respiratory problems, and, in rare cases, death.

Chronic kidney disease (CKD) — a progressive condition in which the kidneys become permanently damaged and lose their ability to filter blood effectively — affects an estimated 788 million to 844 million adults worldwide, according to new research published by The Lancet journal today.

The three-part research series, led by global teams from India, the UK, China, Austria, and other countries, projects CKD to become the fifth leading cause of death globally by 2040.

Experts identified limited access to testing, particularly in low- and middle-income countries, the absence of symptoms in the early stages of the disease, and the growing burden of non-communicable diseases as key factors driving the rise in CKD cases worldwide. They also called for sustained investment in diagnosis, treatment, and healthcare infrastructure to address the growing challenge.

CKD: Underdiagnosis and Lack of Symptoms

The researchers stressed that significant underdiagnosis of chronic kidney disease is a key factor endangering millions of patients worldwide.

Another concern is that mild and moderate stages of the disease often go undetected. Symptoms may develop only in the most severe stages, close to the time when dialysis or a kidney transplant may be required. Without successful treatment, the condition can be fatal.

The lack of symptoms likely contributes to low rates of diagnosis and awareness, said the experts in the research.

"Chronic kidney disease remains one of the most concerning conditions currently impacting global health. The overriding message from our series of research papers is that there remains a pressing need for attention and resources to be focused on this condition," said lead author Dr. Jennifer Lees, Senior Clinical Research Fellow at the University of Glasgow, UK.

Also read:16 Million Indians Die Due To Hypertension Every Year: AIIMS Doc

"There is huge potential to improve early diagnosis, treatment, and healthy lifespan by testing urine for protein routinely across a range of healthcare settings. This may be particularly important in those most at risk of underdiagnosis, including non-white populations and women," she added.

CKD And NCD Burden

The three research papers, presented at the ongoing European Renal Association Congress in Glasgow, Scotland, highlight that diabetes, hypertension, obesity, and cardiovascular disease are among the major drivers of CKD, with the risk of developing the disease increasing with age.

While CKD can affect anyone, it is more common in people who are Black or of South Asian origin. Compared with those without the condition, people with chronic kidney disease are more likely to be hospitalized, develop complications while in hospital, and be readmitted.

The studies also highlighted differences in diagnosis and treatment between men and women, alongside the need for integrated approaches to CKD prevention and treatment across a range of healthcare settings.

Read More: Emma Barnett: It Took 21 Years To Diagnose My Endometriosis

Call For Greater Investment In Kidney Care

The experts called for a renewed focus on CKD diagnosis and treatment.

"Chronic kidney disease affects 844 million people worldwide, yet access to even basic kidney testing remains deeply uneven," said Professor Luxia Zhang from Peking University, China.

"Advances in biomarkers, biopsy, and genetic testing now allow us to understand why an individual has kidney disease, not just that they have it. Realizing this benefit for patients everywhere will require sustained investment in diagnostics, laboratory capacity, and workforce," Zhang added.