Mysterious Fog in the US , Canada and UK: A dense, eerie fog with a "burning chemical-like smell" has spooked a good part of North America and parts of the United Kingdom and Canada. With social media amplifying all concerns, this phenomenon has sparked attention across all social media platforms. However, at the heart of this mysterious fog are a conjunction of natural events, social psychology, and environmental conditions that culminated in all the conspiracy theories and public health fears. Here's a closer look at the mysterious fog, its potential causes, and the societal response it has triggered.

Fog that Feeds Fear

The first reports of this "mysterious fog" came in from Florida where a resident said that they experienced respiratory symptoms, feverish warmth, and stomach cramps after contact with the fog. Similar stories started flooding social media, and within a day or two, a sinister force seemed to sweep across the United States, Canada, and parts of the UK. From Texas to Minnesota, people reported weird odors and health issues that they thought were linked to this bizarre atmospheric event.

Some witnesses were said to see "white particles" swirling through the air; theories ranged from a chemical attack or experimental weapon to drone-related chemical dispersals and references to historical military experiments, such as the infamous 1950s "Operation Sea-Spray."

Fuel to the fire were added when videos and posts, hundreds of thousands in number, began circulating on social media sites like TikTok and X (formerly Twitter) speculating on the origin of the fog. Hashtags like #ToxicFog went trending for days. Hysteria created a self-reinforcing loop in which every post spurred further scrutiny and fear.

Scientific Explanation of the Dense Mysterious Fog

1. What is Fog?

Fog is essentially a low-lying cloud formed when the air temperature cools to its dew point, causing water vapor to condense into tiny droplets or ice crystals. Several types of fog—advection fog, radiation fog, and valley fog—can form depending on conditions such as warm, moist air moving over cooler land or when temperatures plummet rapidly under clear skies.

2. Why the Chemical Smell?

Such chemical-like smell as reported during the occurrence of fog events is sometimes attributed to air pollution. It acts like a sponge, where it absorbs these pollutants, which include sulfur dioxide and nitrogen oxides, among others, that emit from industries. This mixture, therefore, leads to a stench that could be mistaken as unnatural or even toxic.

Also Read: Health Concerns Rise As US, Canada, and UK Come Under The Blanket Of Thick, Dense, Toxic Fog

3. What are the Health Concerns?

High moisture levels from fog can significantly exacerbate symptoms related to respiration, but especially in already predisposed asthmatics and allergy patients. The connection of these symptoms with actual fever, stomach cramps, and puffy eyes is too remote. Experts assume that the irritating effects of entrapped pollutants trapped in fog tend to affect more the eyes and throat rather than the rest of the body affected by some report.

Psychological Effects of Mass Panic Caused by Social Media

Social media amplified a natural weather event into a health epidemic. It made the personal experience of individuals become a cause for fear and speculation, a domino effect.

According to psychologists, this is a concept of selective perception, wherein once people's attention is drawn to environmental anomalies, they begin to notice them. This mirrors earlier panics, such as the Seattle windshield pitting panic of 1954. Then, atomic bomb testing caused fear in many and started to have people looking at their windshields for small marks that they had not seen before. Likewise, postings on the strangeness of the fog probably increased public awareness and suspicion, with people looking to attach unrelated symptoms to the phenomenon.

The fog hysteria shares a commonality with other instances of mass panic, such as the "drone sightings" of recent years or the Cold War-era fears of biological warfare.

Also Read: Mysterious Fog Is Making Americans Sick

These events underscore how fear can cloud judgment, especially when amplified by social media and sensationalist headlines. While historical cases, such as "Operation Sea-Spray," offer concrete evidence of the existence of unethical experiments, the jump from a natural weather condition to theories of chemical attacks exemplifies a more modern trend of connecting unrelated dots, all wonderfully seeded in distrust and anxiety.

Despite the swirling rumors, meteorologists and scientists are in agreement that the mysterious fog is not as alarming as it seems. It is well known that fog traps and amplifies pollutants, especially in urban and industrial regions. Moreover, winter months are the most conducive for fog formation, so its recent prevalence is unsurprising.

On the other hand, environmentalists advise that the fog should wake everyone up to increased levels of pollution. The reported odors and health irritations could be just symptoms of far deeper systemic issues like industrial emissions and lack of control over air quality.

The authorities must be transparent in their communication to combat misinformation and allay public fears. Governments and environmental agencies must provide timely updates on weather phenomena, air quality, and health risks. Initiatives like real-time pollutant tracking and public education campaigns can help demystify natural occurrences while addressing valid environmental concerns.

The mysterious Canada fog is a compelling case study in how environmental events intersect with psychology and societal dynamics. While rooted in natural phenomena, the fog became a vessel for collective fears, amplified by modern technology and historical anxieties.

In this information era where communication occurs at an almost lightning pace, the fog becomes a metaphor that reminds everyone about scientific literacy, environmental responsibility, and an effective balance when considering public concern. Whether perceived as a marvel of nature or as a tale that serves to teach, it left a very powerful mark in people's minds.

US President Donald Trump-backed decision by the Centers for Disease Control and Prevention (CDC) to stop recommending giving infants a dose of the hepatitis B vaccine within 24 hours after birth is likely to lead to hundreds more infections, deaths, and millions of dollars in higher costs, according to new research.

The research, published in JAMA Pediatrics, comes as federal vaccine advisers to Health Secretary Robert F. Kennedy Jr. voted in December 2025 to reverse the long-standing recommendation to delay the first shot until at least two months of age for infants born to mothers who test negative for the virus.

While pediatricians, public health experts, and dozens of medical groups warned that it could harm children and their families, the new JAMA studies modelled the potential impact of the policy.

What Did The Studies Predict?

The first study estimated that delaying the first hepatitis B vaccine dose by two months for babies born in a single year to mothers who tested negative — about 80 percent of the 3.6 million US births annually — would increase lifetime health-care costs by at least $16 million, The Washington Post reported.

If vaccination were delayed by seven months, it would cost an additional $19.8 million.

The second study modeled what would happen if only 10 per cent of babies born to unscreened mothers received a birth dose; an additional 628 babies would get infected.

“One of the most concerning implications is how many more infected Hep B babies will we see,” said co-author Rachel Epstein, a pediatric and adult infectious diseases clinician at Boston Medical Center.

“A universal birth dose helps prevent a substantial number of infections in babies of a lifelong condition that we do not have a cure for,” she added.

CDC Had No evidence To Overturn Hepatitis B Vaccine Policy

Since 1991, all infants born in the US have received the first dose of hepatitis B vaccine within 24 hours of birth, a strategy that led to close to a 99 percent decline in infections among children.

Calling the universal birth-dose policy "a safety net", public health and medical experts noted that nearly 15 percent of pregnant women miss recommended hepatitis B screening. More than half of those who test positive do not receive appropriate follow-up care.

Delaying the initial dose also decreases the likelihood that a child will complete the three-shot series needed for full protection, hepatitis experts have said.

The authors argued that the CDC advisory panel departed from standards established for over three decades and failed to weigh key evidence.

“We noticed that the committee did not have the evidence they needed to inform their decision,” co-author Eric Hall, an assistant professor of epidemiology at Oregon Health and Science University, was quoted as saying to The Post.

“But this group kind of blew past all that and didn’t make any effort to fill the evidence gaps that they might have had. They just went ahead anyway.”

Also read: Hepatitis Infections Claims 1.3 Million Lives Worldwide, India Among Top Contributors: WHO

What is Hepatitis B?

Hepatitis B is a viral infection that affects the liver. It is highly contagious and spreads when blood, semen, or other bodily fluids from a person who carries the virus enter the body of someone who is not infected.

Hepatitis B can also pass from an infected mother to her baby during childbirth, whether through a vaginal delivery or a C-section. It is the most common route of transmission.

Vaccination is the most reliable way to prevent hepatitis B. The shots offer strong protection in infancy and continue to shield individuals well into adulthood.

Babies usually receive a three-dose series. A scientific review by the Vaccine Integrity Project found that 95 percent of healthy infants develop enough immunity after the third dose. The vaccine also lowers the risk of infection by nearly 70 percent in babies born to mothers who have hepatitis B.

A biryani feast followed by a serving of watermelon proved deadly for a family of four in Mumbai on Sunday. The incident was reported from the Pydhonie area, where an entire family passed away after eating biryani for dinner and some watermelon before calling it a night. They had watermelon around 1.00 am or 1.30 am, and their condition started to deteriorate around 5.00 am. They all experienced diarrhoea and nausea and eventually passed away. The mystery now remains: was it a case of accidental watermelon poisoning or something else? Abdullah Dokadia (40), his wife Nasreen Dokadia (35), and their two daughters, Ayesha (16) and Zainab (13), lost their lives, and the police are currently suspecting it to be a case of food poisoning. But can eating watermelon really kill you? Let us find out.

What are the signs of watermelon poisoning?

Watermelon is a popular summer fruit that people enjoy eating during the hotter months. It is 70 per cent water, highly hydrating, and also beneficial for weight loss. However, going overboard is discouraged by doctors, as overeating or consuming adulterated watermelon can lead to abdominal discomfort and digestive distress. Watermelon-related food poisoning can occur because of E. coli or salmonella infections. It can cause rapid dehydration, diarrhoea, cramps, fever, weakness, and, in extreme cases, even death.

What happens when you eat too much watermelon?

Dr Aarti Ullal, Physician and Diabetologist at Gleneagles Hospital, Parel, in an interaction with Health and Me, said, “Eating too much watermelon may lead to bloating, stomach discomfort, or loose motions, mainly because of its high water and natural sugar content. In some individuals, especially those with sensitive digestion, it can also cause acidity or mild cramps and disturb their peace of mind.”

Dr Ullal also stated that watermelon poisoning can occur when the fruit is contaminated with pesticides, chemicals, or bacteria due to poor handling or improper storage. The symptoms may include nausea, vomiting, abdominal pain, diarrhoea, and weakness. These are typically short-term digestive issues but may require medical attention if severe or if they interfere with daily routine. However, questions also arise regarding watermelon allergies. Watermelon allergy is rare and may cause itching in the mouth, swelling, rashes, or stomach upset soon after consumption.

How to check if your watermelon is adulterated?

To check if a watermelon is adulterated, look for an unnaturally bright red colour, cracks, a chemical smell, or an overly soft texture. Always wash the outer surface, as it may contain pesticides or chemicals, before cutting. Make sure to buy from trusted sources to avoid any health issues. Watermelon is safe and healthy to consume, but moderation and proper hygiene are key.

Can eating a watermelon kill you?

Conclusively, it can be said that eating a watermelon specifically should not cause deaths. However, if you bring the fruit home, it is advised to check it for signs of adulteration before consuming. It helps eliminate the possibility of side effects, just in case. However, if you experience food poisoning-like symptoms, consult a doctor immediately.

Viral hepatitis B and C – responsible for 95 per cent of hepatitis-related deaths worldwide – caused 1.3 million deaths worldwide, according to the Global Hepatitis Report 2026, released today by the World Health Organization.

Of these, 1.1 million people died from hepatitis B and 240,000 from hepatitis C. Liver cirrhosis and hepatocellular carcinoma were the main causes of hepatitis related deaths, stated the report released at the World Hepatitis Summit.

Further, India emerged among the 10 countries that account for 69 per cent of global hepatitis B-related deaths. The country is also among the 10 countries contributing to 58 per cent of hepatitis C-related deaths worldwide.

The Global Hepatitis Burden And Treatment Gap

Despite being preventable and treatable, transmission of hepatitis continues, with more than 4,900 new infections every day, or 1.8 million each year.

As per the WHO report, a whopping 287 million people were living with chronic hepatitis B or C infection in 2024.

The same year, 0.9 million people were newly infected with hepatitis B.

The WHO African Region accounted for 68 per cent of new hepatitis B infections, yet only 17 per cent of newborns in the region received the hepatitis B birth-dose vaccination.

Another 0.9 million hepatitis C infections were recorded in 2024. People who inject drugs accounted for 44 per cent of new infections, highlighting the urgent need for stronger harm reduction services and safe injection practices.

Of the 240 million people with chronic hepatitis B in 2024, fewer than 5 per cent were receiving treatment. Similarly, only 20 per cent of people with hepatitis C have been treated since 2015.

Hepatitis: Measurable Gains

Notably, global efforts to combat viral hepatitis have also delivered measurable progress in reducing infections and deaths since 2015.

The annual number of new hepatitis B infections has dropped by 32 per cent, and hepatitis C-related deaths have fallen by 12 per cent globally.

Hepatitis B prevalence among children under five has also decreased to 0.6 per cent, with 85 countries achieving or surpassing the 2030 target of 0.1 per cent.

“Around the world, countries are showing that eliminating hepatitis is not a pipedream, it's possible with sustained political commitment, backed by reliable domestic financing,” said Dr Tedros Adhanom Ghebreyesus, WHO Director-General.

“At the same time, this report shows that progress is too slow and uneven. Many people remain undiagnosed and untreated due to stigma, weak health systems, and inequitable access to care. While we have the tools to eliminate hepatitis as a public health threat, urgent scale-up of prevention, diagnosis, and treatment is needed if the world is to meet the 2030 targets,” he added.

Hepatitis: How To Prevent

The report noted that highly effective tools to combat hepatitis infections are already available. These include the hepatitis B vaccine, which protects more than 95 per cent of vaccinated people against both acute and chronic infections.

Further, the long-term antiviral treatment for hepatitis B can also help effectively manage chronic infection and prevent severe liver disease. Another is the Hepatitis C short-course curative therapy which lasts 8-12 weeks and can cure more than 95 per cent of infections.

The report identifies priority actions to accelerate hepatitis elimination as a public health threat. These include:

• Scaling up treatment for chronic hepatitis B infection,
• Stronger political commitment and financing,
• Improved coverage of hepatitis B birth-dose vaccination
• Expanded antiviral prophylaxis to prevent mother-to-child transmission of HBV infection
• Improve injection safety in both health-care settings and community practices.