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Typhoid fever is not the kind of illness most people in developed nations worry about. It's often written off as a disease of the past—something that plagued ancient societies before clean water systems and antibiotics. But here’s the thing: typhoid never went away. And now, it's evolving into something much more dangerous—something even modern medicine might not be able to stop.
A large genomic study published in The Lancet Microbe in 2022 has sounded the alarm. The bacterium responsible for typhoid, Salmonella enterica serovar Typhi (or S. Typhi), is rapidly acquiring resistance to nearly all antibiotics used to treat it. More disturbingly, strains resistant to multiple drug classes are spreading beyond their traditional strongholds in South Asia and appearing across continents—including in the United States, United Kingdom, and Canada.
This is no longer a regional concern. It’s a global one.
The study involved sequencing over 3,400 S. Typhi strains collected between 2014 and 2019 from patients in India, Pakistan, Nepal, and Bangladesh. The results were stark. Not only were extensively drug-resistant (XDR) strains of typhoid rising rapidly, but they were also outcompeting and replacing less resistant versions.
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XDR typhoid strains are already immune to several older antibiotics—ampicillin, chloramphenicol, and trimethoprim/sulfamethoxazole. But here’s where it gets worse: many are now developing resistance to newer and more potent drugs like fluoroquinolones and third-generation cephalosporins, which until recently were mainstays of typhoid treatment.
Even the last reliable oral antibiotic—azithromycin—is showing signs of failure. The study found emerging mutations that could potentially render azithromycin ineffective. These haven’t yet converged with XDR strains, but scientists warn that it’s only a matter of time. If that happens, oral treatment options could become entirely obsolete.
For now, South Asia remains the epicenter of the crisis, accounting for about 70% of the global typhoid burden. But this doesn’t mean the threat is contained.
Researchers tracked nearly 200 instances of international transmission since the 1990s, most involving travel or migration. Typhoid "superbugs" have been detected in Southeast Asia, East and Southern Africa, and in wealthy nations where the disease was thought to be virtually eradicated.
“The speed at which highly-resistant strains of S. Typhi have emerged and spread is a real cause for concern,” said Dr. Jason Andrews, an infectious disease specialist at Stanford University who co-authored the study.
If antibiotics are failing, what’s next? For starters, prevention. Experts say the most immediate and scalable solution lies in typhoid conjugate vaccines (TCVs). These vaccines offer strong, long-lasting protection and are safe for children as young as six months old. But access is patchy.
Pakistan became the first country to introduce TCV into its national immunization program in 2019—an urgent response to the first major outbreak of XDR typhoid that hit its population. Since then, the move has become a case study in how vaccination can cut off the disease at its roots.
India, Bangladesh, and Nepal have followed suit with pilot programs and localized rollouts, but global coverage remains far too low. Meanwhile, high-income countries have not prioritized TCV access at all, largely because typhoid isn’t seen as a domestic threat.
This typhoid crisis isn’t an isolated story. It’s part of a larger, systemic problem: antibiotic resistance is now one of the top global causes of death. A 2019 study published in The Lancet estimated that antimicrobial resistance was directly responsible for 1.27 million deaths worldwide, surpassing HIV/AIDS and malaria.
Typhoid is just the latest face of that threat. If azithromycin fails, intravenous treatments will be the only remaining option. This is not sustainable for low-resource settings, where typhoid is most rampant.
And as the S. Typhi genome continues to adapt, the search for novel antibiotics becomes more urgent but the global antibiotic pipeline is worryingly dry. Very few new drugs are being developed, and those that are rarely target neglected tropical diseases like typhoid.
COVID-19 reminded us how quickly a localized health threat can go global. Typhoid is no different. The bacteria travel with people—through tourism, immigration, and international trade.
The difference is: we already have tools to stop this. TCVs work. Better sanitation and access to clean water help. Public health messaging and travel guidelines can make a difference. But we’re not moving fast enough.
A recent Indian study estimated that vaccinating children in urban areas could reduce typhoid cases and deaths by up to 36 percent. That’s a significant dent—especially when combined with infrastructure upgrades and careful antibiotic stewardship.
If left unchecked, drug-resistant typhoid could become nearly impossible to treat in outpatient settings. That means more hospitalizations, more strain on health systems, more deaths—particularly among children in developing nations.
With around 11 million cases of typhoid annually, even a small increase in resistance could tip the balance into a major health crisis.
And if XDR strains gain resistance to azithromycin, we will be left with zero effective oral drugs, none. The path forward is clear—and urgent. Here’s what needs to happen:
Antibiotic resistance isn’t science fiction. It’s a biological reality. And typhoid is just one example of how quickly things can unravel when we underestimate an ancient enemy.
We can still turn the tide but only if we act with urgency and coordination. The warning signs are flashing red. Typhoid isn’t gone. It’s evolving. And this time, it may be deadlier than ever.
Credits: Canva
In Northeast Ohio, late summer usually means backyard cookouts, packed ballfields, and sticky, humid nights. This year, though, it has brought something less welcome: a rise in mosquito bites, and a rise in West Nile virus (WNV) cases.
Local health departments reported that two residents, one in Medina County and another in Cuyahoga County, tested positive for West Nile virus in August, according to Ideastream Public Media. Data from the Ohio Department of Health showed six confirmed cases statewide as of August 21.
Nationwide, the numbers tell a bigger story. According to the Centers for Disease Control and Prevention (CDC), there have been at least 771 human cases reported across 39 states as of September 9. Alarmingly, 490 of those cases were neuroinvasive, meaning they affected the brain or spinal cord, and were potentially life-threatening.
West Nile virus remains the most common mosquito-borne illness in the continental United States, according to Vector Disease Control International. Most infected people never develop symptoms, but those who do may experience fever, body aches, nausea, vomiting, or a rash.
In about 1 in 150 cases, the virus causes brain inflammation or meningitis, which can be deadly.
Older adults and immunocompromised individuals face the highest risk of severe complications. “Protecting yourself is especially important for people who are more at risk,” CBS News chief medical correspondent Dr. Jon LaPook emphasized, urging the public to use repellent, wear long sleeves, and drain standing water near their homes.
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This year’s surge is not random. Mosquitoes thrive in warm, wet conditions. Longer, hotter summers and heavier rainfall, both linked to climate change, mean longer breeding seasons and more stagnant pools where larvae grow.
"It's always worse in the summer because that's when the mosquito population is at its highest," said Dr. Amy Edwards, an infectious disease specialist at University Hospitals in Cleveland, as reported in The Cool Down. She added that Ohioans face a very different risk today than a generation ago: “For people who grew up in Ohio, mosquitoes and ticks didn't used to carry disease here. Across the U.S., the rate of mosquito-borne illness is going up.”
The trend isn’t limited to West Nile. Lyme disease has been spreading to areas previously considered too cold for ticks, and dengue fever has reemerged in Florida, all signs of vector-borne diseases finding new footholds.
Public health officials stress that the danger is far from gone. “Infections can continue to occur until the first hard frost of the season, which is likely still many weeks away,” said Dr. Robbie Goldstein, Massachusetts’ public health commissioner, in a recent advisory. He urged people to remain vigilant, as mosquito activity remains high through early fall
The CDC updates its case counts biweekly through ArboNET, a national arboviral surveillance system. The agency notes that symptoms can take between two to fourteen days to appear after a mosquito bite, and in people with weaker immune systems, it can take even longer.
There is currently no specific treatment for West Nile virus. For most, recovery involves managing symptoms such as fever and fatigue. Severe cases may require hospitalization for intravenous fluids or even respiratory support.
Health experts recommend taking steps to minimize mosquito exposure:
West Nile virus, first detected in the U.S. in 1999, is now a recurring part of late summer and early fall. Its growing prevalence serves as a warning of how climate change, urbanization, and changing ecosystems can amplify public health threats.
As the season continues, experts urge residents to stay proactive rather than complacent. The mosquito buzzing around your backyard may be more than an annoyance, it could be carrying a virus that has sickened hundreds this year and shows no sign of stopping.
Credits: Canva
A new study published in eLife has shed light on why dopamine-producing neurons, the brain cells crucial for motor control, die off in Parkinson’s disease. Researchers from the Gladstone Institute for Neurological Disease in the US found that these neurons may essentially be burning themselves out due to overactivity, potentially triggering or accelerating the condition.
Parkinson’s disease is marked by the progressive death of dopamine-producing neurons in the substantia nigra, the part of the brain that controls movement. Building on earlier research in animal models, the Gladstone team explored whether the surviving neurons overcompensate for lost cells by becoming hyperactive, ultimately causing damage to themselves.
To test this theory, scientists used genetically modified mice and stimulated their dopamine neurons with drugs for several days. The result: the neurons gradually degenerated and died, particularly in the substantia nigra, mirroring what happens in human Parkinson’s patients.
“An overarching question in the Parkinson’s research field has been why the cells that are most vulnerable to the disease die,” says neuroscientist Ken Nakamura from the Gladstone Institute. “Answering that question could help us understand why the disease occurs and point toward new ways to treat it.”
The study went a step further by examining changes inside these overworked neurons. Researchers found alterations in calcium levels and shifts in the expression of genes involved in dopamine metabolism and calcium regulation. These findings were mirrored in brain samples from people with early-stage Parkinson’s disease, suggesting that the mechanism seen in mice is relevant to humans.
“In response to chronic activation, we think the neurons may try to avoid excessive dopamine, which can be toxic, by decreasing the amount of dopamine they produce,” explains neuroscientist Katerina Rademacher, lead author of the study. “Over time, the neurons die, eventually leading to insufficient dopamine levels in the brain areas that support movement.”
The research suggests a troubling cycle: as some neurons die, the remaining ones become even more active to compensate, which may in turn accelerate their demise. This process is similar to lightbulbs burning too brightly and eventually blowing out.
Scientists have long debated why these vulnerable cells die, with previous theories focusing on faulty mitochondria, toxic protein clumps, and genetic mutations. This new study adds another potential cause to the list, overactivity itself.
If confirmed in further studies, this discovery could open the door to new therapies. Adjusting the firing patterns of dopamine neurons with medication or deep brain stimulation might help prevent them from overworking and prolong their survival.
“It raises the exciting possibility that adjusting the activity patterns of vulnerable neurons could help protect them and slow disease progression,” Nakamura notes.
The findings represent a step forward in understanding Parkinson’s disease, offering fresh clues for researchers seeking ways to halt or slow its devastating impact.
Credits: Canva
Every second counts in an emergency, and World First Aid Day serves as a timely reminder of the critical role first aid plays in saving lives. Observed annually on the second Saturday of September, this day aims to raise awareness about first aid, encourage training, and empower individuals to respond effectively during crises. In 2025, the day will be observed on September 13th, uniting communities worldwide in their commitment to safety and preparedness.
This year’s theme is “First Aid and Climate Change,” highlighting the need for emergency preparedness in the face of increasingly frequent climate-related disasters. Rising global temperatures, floods, wildfires, and storms are creating new challenges for communities, making first aid knowledge more crucial than ever. The theme underscores that basic first aid is not just for personal emergencies but is essential in building community resilience in a changing world.
First aid can make the difference between life and death in the crucial minutes before professional medical help arrives. Whether it’s cardiac arrest, choking, severe bleeding, or burns, timely action can significantly improve survival chances and recovery outcomes. Equipping individuals with basic first aid skills fosters a culture of preparedness, at home, in workplaces, and in public spaces.
In addition to preventing complications and reducing injury severity, first aid training empowers people to act confidently in emergencies. From performing CPR to controlling bleeding and handling choking incidents, these life-saving skills can transform bystanders into first responders.
The roots of first aid go back to the 19th century when Henry Dunant, founder of the Red Cross, witnessed the suffering of injured soldiers during the Battle of Solferino. This inspired a humanitarian movement to care for the wounded without discrimination. The term “first aid” was later coined by German surgeon Friedrich von Esmarch in the late 1800s.
World First Aid Day was first observed in 2000 by the International Federation of Red Cross and Red Crescent Societies (IFRC) to promote global first aid education. Today, millions of people participate in awareness events, training workshops, and community demonstrations, spreading the message that first aid is a universal skill everyone should learn.
Individuals can get involved by attending first aid training courses, sharing educational resources on social media, organizing community workshops, or volunteering with local Red Cross and Red Crescent societies. Even downloading a first aid mobile app can be a step toward being prepared.
World First Aid Day 2025 is more than a date on the calendar, it’s a call to action. By learning first aid, we can build safer, more resilient communities ready to face emergencies, including those amplified by climate change. This September 13th, take the time to learn, teach, and spread awareness. You might just save a life.
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