All USA & Canada articles – Page 2
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NewsWhat exactly is Long COVID? It depends who you ask
New research finds that the definition of Long COVID varies so widely across published studies that the percentage of people identified as having the condition can differ dramatically, making it harder to treat patients and advance research.
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NewsCommon food bacterium could help make vitamins cheaper and greener
A new study reveals how Lactococcus lactis, a common food bacterium, regulates the production of a key precursor in vitamin K₂ (menaquinone) biosynthesis. The bacteria produce enough of this precursor to support their growth while preventing toxic buildup.
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NewsResearchers discover all-new antifungal drug candidate in university greenhouse
A research team at McMaster University has discovered a new drug class that could someday lead to breakthrough treatments for dangerous fungal infections. The new molecules, dubbed coniotins, were isolated from a plant-dwelling fungus called Coniochaeta hoffmannii — the samples of which were collected from the McMaster ...
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NewsResearchers identify a potential biomarker for long COVID
Researchers have identified a potential biomarker for long COVID. The study results detail the detection of SARS-CoV-2 protein fragments within extracellular vesicles (EVs) — tiny, naturally occurring packages that help cells share proteins, metabolites, and other materials.
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NewsAI uncovers new antibiotics in ancient microbes
Researchers used artificial intelligence to identify previously unknown compounds in Archaea that could fuel the development of next-generation antibiotics.
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NewsReady for market: Yeast process boosts clean, cost-efficient chemical production of succinic acid
A re-engineered yeast strain that efficiently produces succinic acid has been developed, which allows this valuable chemical to be produced at a lower cost.
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NewsMalaria vaccine mimics natural immunity with high precision
A detailed analysis reveals one of the reasons why the R21/Matrix-M malaria vaccine works so well: the antibodies generated following vaccination are indistinguishable from those found in people who have been infected by the parasites.
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NewsChemical trick could turn losing malaria drug into a winner
A new generation of malaria drugs failed clinical trials, in part because they were hard to swallow. Chemists have remodeled their structures to make them more soluble, while maintaining their effectiveness against drug-resistant parasites.
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News4,000-year-old sheep reveals that livestock played a role in prehistoric plague infections
An ancient Yersinia pestis genome recovered from sheep sheds new light on a mysterious infectious disease that plagued prehistoric Eurasia for over 2000 years.
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NewsStudy finds fungus metabolites may help ghost shrimp survive
Researchers have found that chemical byproducts produced by the amphibian-killing fungus Batrachochytrium dendrobatidis—commonly known as Bd—may actually help ghost shrimp survive.
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NewsEarly challenges to the immune system disrupt oral health
Researchers identified changes over time in the oral microbiome of children living with HIV, offering insights into how early immune challenges shape not only oral health but also systemic health.
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NewsBioscientist wins NSF CAREER Award to investigate bacterial toxins, expand inclusion in STEM
Marcos de Moraes has received support to study the molecular mechanisms and evolutionary roles of bacterial toxins known as deaminases, as well as an educational outreach effort aimed at making biosciences open to all, including differently abled persons.
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NewsScientists develop new approach to fighting many viruses at once
Scientists have developed a research pipeline to fuel the development of “universal vaccines,” that would address broad viral families and mutated viral variants.
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NewsNovel immunologic surveillance study provides new insights into post-pandemic return of respiratory viruses
Non-pharmaceutical interventions such as masking and distancing targeted towards SARS-CoV-2 during the pandemic also decreased circulation rates of and population immunity to common respiratory pathogens in children, a new study shows.
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NewsCopper antimicrobials can drive antibiotic resistance in bacteria, but there’s a fix, scientists say
Microbiologists have found that heavy use of copper antimicrobials can drive antibiotic resistance in bacteria. However, resistance quickly diminishes without copper exposure, suggesting that copper could help reduce antibiotic resistance if alternated with other measures.
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NewsNational study urges expanded vaccine screening in emergency departments
About 49% of people are unaware of one or more vaccines recommended for them. Further, 86% have not received one or more of these vaccines, according to the first national comprehensive vaccine surveillance study conducted in emergency departments.
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NewsMaple compound offers new way to fight tooth decay
A new study highlights the potential of using a natural compound from maple to combat the bacteria responsible for tooth decay: Streptococcus mutans. Epicatechin gallate is a powerful and safe alternative to traditional plaque-fighting agents.
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NewsScientists home in for a close look at lung infections
A new study has meticulously sampled different lung regions in people with cystic fibrosis to understand why infections persist after new treatments.
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NewsSweet disguise: the human body hides RNA with sugar coatings
To our immune system, naked RNA is a sign of a viral or bacterial invasion and must be attacked. But our own cells also have RNA. To ward off trouble, our cells clothe their RNA in sugars, a new study reports.
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NewsNanoparticles that self-assemble at room temperature could transform vaccine delivery
Researchers have engineered polymer-based nanoparticles that form with a simple temperature shift—no harsh chemicals, no specialized equipment, and no processing needed. They can self-assemble at room temperature and deliver RNA to living cells.