Safety fears as scientists make first viruses designed by AI

Scientists have made the first viruses designed by artificial intelligence in a milestone that raises hopes for new medicines but also concerns over how to ensure the technology remains safe.

The viruses are specific kinds known as bacteriophages, which only infect bacteria and are used around the world to treat patients with persistent infections. In lab tests, a cocktail of the AI-designed viruses killed E coli bugs that were resistant to natural bacteriophages.

Dr Brian Hie, a chemical engineer at Stanford University in California, used genome language models, the genetic equivalent of the large language models behind AI chatbots, to design functioning genomes for bacteriophages. The viruses were then made in the laboratory and pitted against E coli in a dish.

The ability to “rapidly design” genomes and tune them for specific bugs while overcoming resistance could “transform phage therapy” and “expand biotechnological toolkits”, the researchers wrote in the journal Science.

But beyond the potential benefits, the scientists said the work raised “important biosafety, biocontainment and biosecurity considerations” and urged others who were designing whole genomes to “consult both safety and security professionals throughout the project”.

To read more, see The Guardian. 

Posted by Dr. Tim Sandle, Pharmaceutical Microbiology Resources (http://www.pharmamicroresources.com/)

Ebola virus behind massive outbreak in DRC could be mutating, officials say

 

Image: By CDC/Cynthia Goldsmith - Public Health Image Library, #10816 

The virus causing a massive outbreak of Ebola in the Democratic Republic of the Congo could be mutating, health officials fear, as confirmed cases pass 4,000.

Africa’s public health watchdog said the time for incremental action was over as they announced plans to scale up every aspect of the response and go “door to door” looking for patients.

The Ebola outbreak, caused by the Bundibugyo strain of the virus, was first reported on 15 May, although there are suspicions the disease could have been spreading since January.

There have been 3,973 cases and 1,801 deaths recorded as of 4 August, according to the DRC’s national public health institute. Speaking on Thursday, Dr Jean Kaseya, director general of the Africa Centres for Disease Control and Prevention (Africa CDC), told a press briefing cases had topped 4,000.

The outbreak is now the second-largest Ebola outbreak on record. There are eight times more cases, and six times more deaths than were recorded 11 weeks into the West Africa Ebola outbreak in 2014-18, which infected more than 28,000 people and killed at least 11,000.

Kaseya said he had spoken to the director general of the World Health Organization, Dr Tedros Adhanom Ghebreyesus, and they planned studies “to check if there is no additional issue, or maybe if the virus is not mutating. Because the level of severity of this Bundibugyo outbreak is unprecedented.”

More than two-thirds of Ebola deaths are happening in the community rather than in treatment centres. In a treatment centre run by MSF in Bunia, the capital of Ituri province, 90% of admitted patients do not appear on authorities’ lists of contacts of known cases. Both factors indicate high levels of untracked transmission.

Read more via The Guardian. 

Posted by Dr. Tim Sandle, Pharmaceutical Microbiology Resources (http://www.pharmamicroresources.com/)

Why Men Struggle to Ask for Help — and What Men-Only Rehab Changes

A man will drive around lost for an hour before he rolls down the window and asks for directions. It's a tired joke, but something real sits underneath it. Plenty of men are trained early and thoroughly to treat needing help as a kind of failure. That training costs little when the stakes are a wrong turn. When the problem is drinking or drugs, it can cost years.

I've sat across from a lot of men who waited far too long. Almost none of them spent that whole time in denial. Most knew something was wrong. They just couldn't work out how to say it out loud.

The training starts early

Think about what boys hear growing up. Shake it off. Don't cry. Handle it yourself. By adulthood most men have absorbed a simple rule: your problems are yours, and you don't hand them to anybody else.

That rule builds some genuinely good things. Men take responsibility. They provide. They show up when it's hard. But the same rule quietly tells a man that admitting he can't stop drinking is a confession of weakness, and that saying it in front of other people is worse than the drinking itself.

So he handles it privately. He'll cut back Monday. He measures himself against the guys who drink more and decides he's fine. Years go by like that.

What the numbers show

This isn't just an impression. It shows up in national data.

The National Institute of Mental Health, drawing on 2022 federal survey data, reports that among adults with any mental illness, 41.6 percent of men received treatment in the past year, compared with 56.9 percent of women. Men get help less often even when they're clearly struggling.

The same gap runs through alcohol. NIAAA reports that men are nearly twice as likely as women to have alcohol use disorder. More men affected. Fewer men in treatment.

The consequences are heavy. The CDC reports that in 2024 the suicide rate among men was nearly four times the rate among women. Men are dying from things that respond to treatment, partly because reaching for that treatment feels harder than gritting it out.

How this plays out with addiction

Alcohol and drugs fit neatly into the rule about handling things yourself. A drink after work isn't asking anyone for anything. It's private, it's available, and it takes the edge off whatever a man isn't talking about.

That's the trap. Substances become the socially acceptable way for a man to manage stress, grief, physical pain, or a marriage that's falling apart, precisely because they don't require him to admit anything to anyone. By the time it's obviously a problem, he's got years invested in the story that he's got it under control.

Then shame shows up and makes it worse. A man who prides himself on being the person others lean on can't picture himself as the one who needs help. So he keeps quiet, and the thing keeps growing.

What changes in a room full of men

Here's where the setting starts to matter. I want to be careful not to oversell this: the research on gender-specific treatment is stronger for women's programs than men's, and no serious program should claim otherwise. But there are real, practical things that shift when a man walks into a room where everyone else is a man dealing with the same thing.

The performing stops sooner. A lot of men spend energy managing how they come across, especially around women, and especially when the subject is failure. Take that away and the guard tends to come down faster. The first honest sentence gets said a week earlier than it otherwise would.

Shared experience does some of the work too. Nobody has to explain what it's like to be the guy everyone counted on, or why he couldn't tell his wife, or how strange it feels to cry in front of strangers at forty-five. Somebody in that circle has already been there and can say so.

Men-only programs can also build treatment around the specific things men tend to bring: anger that's really grief, identity wrapped up in work, difficulty naming a feeling more precise than "fine" or "pissed off." Those are learnable skills. They're easier to learn in a room where nobody's judging you for not having them yet.

What it looks like

Picture a man in his forties who's been drinking heavily for a decade. He's tried to quit alone maybe twenty times. What finally gets him through the door isn't a lecture from his wife. It's a friend from work who went to treatment last year, sitting in a truck in a parking lot, telling him plainly that he did it and it wasn't what he expected.

In his first group, he says almost nothing. In the second week, another guy describes hiding bottles in the garage, and he hears his own life come out of someone else's mouth. That's when he starts talking. Not because someone convinced him to be vulnerable, but because for the first time it didn't feel like exposure.

When and how to get help

You don't need to lose everything first. If alcohol or drugs have become the thing you need to sleep, to cope, or to get through a normal week, that's enough reason to talk to a professional.

A good first step is an honest conversation with a treatment provider. Ask what the daily program actually looks like and whether medical support is available for withdrawal, since stopping certain substances on your own can be dangerous. For men who suspect they'd open up more without an audience to perform for, a men's residential treatment program offers medical care and therapy in a setting built around that.

If things ever get dark, or you're having thoughts of harming yourself, don't wait it out alone. You can reach the 988 Suicide & Crisis Lifeline any time by calling or texting 988.

Why asking is the harder choice

There's a version of toughness that keeps a man silent until the damage is done. There's another version that walks into a room full of strangers and says the thing he's never said. The second one costs more. Most men I've watched do it will tell you it was the hardest thing they ever pulled off, and the first thing in years that actually worked.

Sources

●     National Institute of Mental Health (NIMH), Mental Illness (2022 NSDUH data) — among adults with any mental illness, 41.6% of males received mental health treatment in the past year, compared with 56.9% of females. https://www.nimh.nih.gov/health/statistics/mental-illness

●     National Institute on Alcohol Abuse and Alcoholism (NIAAA), Alcohol Use Disorder (AUD) in the United States: Age Groups and Demographic Characteristics — men are nearly twice as likely as women to have past-year alcohol use disorder. https://www.niaaa.nih.gov/alcohols-effects-health/alcohol-topics/alcohol-facts-and-statistics/alcohol-use-disorder-aud-united-states-age-groups-and-demographic-characteristics

●     Centers for Disease Control and Prevention (CDC), Suicide Data and Statistics — the suicide rate among males in 2024 was nearly four times higher than the rate among females. https://www.cdc.gov/suicide/data/index.html

Posted by Dr. Tim Sandle, Pharmaceutical Microbiology Resources (http://www.pharmamicroresources.com/)

Graphene Oxide: A New Weapon Against Bacteria Without Harming Human Cells

 

The search for new ways to combat harmful microorganisms has taken on greater urgency as antibiotic resistance continues to rise worldwide. Scientists are therefore exploring innovative materials that can prevent bacterial growth without relying on conventional antibiotics. One promising candidate is graphene oxide (GO), a modified form of graphene that possesses remarkable antibacterial properties while remaining compatible with human tissues.

By Tim Sandle  

Researchers at the Korea Advanced Institute of Science and Technology (KAIST) have now uncovered the molecular mechanism behind graphene oxide's antibacterial activity. Their findings provide important evidence explaining how the material can selectively eliminate bacteria while leaving human cells unharmed.

Understanding Graphene Oxide

Graphene oxide is derived from graphene, a material consisting of a single layer of carbon atoms arranged in a honeycomb lattice. Unlike pure graphene, graphene oxide contains oxygen-containing chemical groups attached to its surface. These groups improve its ability to disperse in water and allow it to interact with biological systems in unique ways.

Although graphene oxide has long been known to exhibit antibacterial effects, the precise reason for this activity remained poorly understood. The KAIST study has now provided a detailed explanation at the molecular level.

How Graphene Targets Bacteria

The research team discovered that graphene oxide displays what they describe as selective antibacterial action. Rather than damaging all cells indiscriminately, graphene oxide specifically targets bacterial cell membranes.

The key lies in a bacterial membrane component known as phosphatidylglycerol (POPG). This phospholipid is abundant in bacterial membranes but largely absent from human cell membranes. Oxygen-containing groups on the surface of graphene oxide recognize and bind to POPG, enabling the material to attach directly to bacterial cells.

Once attached, graphene oxide disrupts membrane integrity, leading to bacterial cell death. Human cells, lacking significant amounts of POPG, are largely unaffected by this mechanism. In effect, graphene oxide acts like a highly selective antimicrobial agent that can distinguish bacterial cells from human tissues.

This discovery is particularly significant because many conventional disinfectants and antimicrobial compounds can damage both microbial and human cells, resulting in toxicity or irritation.

Activity Against Antibiotic-Resistant Organisms

One of the most important findings from the study was graphene oxide's effectiveness against a broad range of bacterial species, including antibiotic-resistant organisms often referred to as "superbugs."

The emergence of antimicrobial resistance is among the most serious challenges facing public health. As bacteria evolve resistance mechanisms against existing antibiotics, there is increasing interest in non-antibiotic approaches to infection control.

Graphene oxide could represent one such strategy. Rather than interfering with bacterial metabolism or protein synthesis, the material physically damages bacterial membranes. This mode of action may reduce the likelihood of resistance development and provide an additional tool for controlling microbial contamination.

 

Supporting Wound Healing

The researchers also investigated the material in animal wound-healing models. In addition to suppressing bacterial growth, graphene oxide-containing nanofibers promoted faster wound healing without triggering significant inflammatory responses.

From a microbiological perspective, this is particularly interesting since wound management frequently requires a balance between antimicrobial activity and tissue compatibility. Materials capable of both preventing infection and supporting tissue regeneration are highly desirable for advanced wound care applications.

Durable and Washable Antimicrobial Textiles

Another notable advantage relates to durability. The investigators found that graphene oxide nanofibers retained their antibacterial effectiveness even after repeated washing cycles.

This characteristic creates opportunities for practical applications in areas where hygiene is critical, including:

• Healthcare uniforms
• Wound dressings
• Face coverings
• Sportswear
• Military clothing
• Hospital textiles
• Consumer hygiene products

Unlike many conventional antimicrobial coatings, which gradually lose effectiveness through use and laundering, graphene oxide appears capable of providing sustained antimicrobial performance.

Moving From Research to Commercial Products

Importantly, graphene-based antimicrobial technologies are already moving beyond the laboratory.

A graphene antibacterial toothbrush developed through patents associated with the startup company Materials Creation Co., Ltd. has reportedly sold more than 10 million units. This demonstrates that there is already substantial commercial interest in graphene-enabled hygiene products.

The technology has also been incorporated into GrapheneTex, an antimicrobial textile platform. The material was used in uniforms worn by the Taekwondo demonstration team during the 2024 Paris Olympics and is expected to appear in sportswear at future international events, including the 2026 Asian Games.

These examples illustrate how nanomaterials research can successfully transition into real-world products with everyday consumer applications.

Future Medical Applications

The implications extend beyond clothing and personal care products. Graphene oxide could potentially be incorporated into:

• Medical textiles
• Implant coatings
• Catheter materials
• Wearable health technologies
• Smart wound dressings
• Biosensors
• Healthcare devices

Because the material combines antimicrobial activity with biocompatibility, it may offer an attractive platform for designing next-generation infection-control technologies.

As Professor Sang Ouk Kim noted, understanding why graphene oxide selectively kills bacteria while remaining safe for human cells provides a scientific foundation for developing a much broader range of applications.

A Sustainable Alternative?

Perhaps the most exciting aspect of the research is its potential contribution to a more sustainable approach to infection control. Rather than relying exclusively on antibiotics or chemical disinfectants, materials engineered with selective antibacterial properties could become part of a broader strategy for reducing microbial contamination.

As antimicrobial resistance continues to threaten healthcare systems globally, innovative materials such as graphene oxide may help reduce dependence on traditional antibiotics while improving hygiene, patient safety, and public health outcomes.

Reference

Cha S, Chung JY, Yang S, Lee SC, Lee CW, Cheng CWL, Kim JB, Kim NJ, Park A, Choi H, Sinn J, Weissleder R, Kotov NA, Seo M, Chung HJ, Kim SO. Biocompatible but Antibacterial Mechanism of Graphene Oxide for Sustainable Antibiotics. Advanced Functional Materials. 2026. DOI: 10.1002/adfm.74695.

Posted by Dr. Tim Sandle, Pharmaceutical Microbiology Resources (http://www.pharmamicroresources.com/)

Microbiological control during facility start up and validation

 

Posted by Dr. Tim Sandle, Pharmaceutical Microbiology Resources (http://www.pharmamicroresources.com/)

What Legionnaires' and Cyclospora Reveal about a Warming World

As New York City investigates new cases of Legionnaires' disease and health officials continue responding to Cyclospora outbreaks linked to contaminated produce across the US, there's another story that's getting little attention:

Climate change is becoming one of the defining public health challenges of our time.

Dr. Tyler Evans, infectious disease physician, CEO of Wellness Equity Alliance, and author of Pandemics, Poverty, and Politics, can discuss why recent outbreaks are reminders that climate change is increasingly a public health crisis.

Key Discussion Points:

• Extreme heat creates the conditions for disease. Hotter summers warm building water systems, making it easier for Legionella bacteria to multiply in cooling towers and plumbing if maintenance falls behind. At the same time, heavier rainfall and flooding increase the chances that produce becomes contaminated with pathogens like Cyclospora.

• Infrastructure is becoming a climate vulnerability. Legionnaires' disease and Cyclospora are often described as isolated outbreaks, but both expose aging water, sanitation, and food systems that are struggling to withstand more frequent heat extremes and severe weather.

• Climate change magnifies existing inequities. The same neighborhoods that experience the hottest temperatures because of decades-old redlining often have older housing, aging infrastructure, higher rates of asthma and chronic disease, and fewer resources to recover from environmental health threats. Climate doesn't create these disparities—it amplifies them.

• Environmental policy is infectious disease policy. Conversations about clean water, resilient infrastructure, urban cooling, and emissions reduction are also conversations about preventing future outbreaks. Public health and climate resilience are no longer separate issues.

• The Fourth of July heat dome showed what comes next. More than 185 million Americans were under extreme heat warnings, and dozens died from heat-related illness. Heat is the most visible climate health threat, but it's also quietly increasing risks for waterborne and environmentally driven infections that receive far less attention.

Posted by Dr. Tim Sandle, Pharmaceutical Microbiology Resources (http://www.pharmamicroresources.com/)

More bad science

 Image (C) Tim Sandle

Science depends on trust. Every published paper becomes part of a collective body of knowledge that researchers, regulators, healthcare professionals, policymakers, and the public rely upon. The assumption is that published findings have been generated through rigorous experimentation, careful analysis, and independent peer review. But what happens when that assumption is no longer safe? https://www.linkedin.com/pulse/science-under-threat-why-rise-industrialised-research-professor-tim-2kxie/?published=t

Posted by Dr. Tim Sandle, Pharmaceutical Microbiology Resources (http://www.pharmamicroresources.com/)