All USA & Canada articles – Page 3
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NewsLong Ebola: Sudan virus can persist in survivors for months, study shows
More than half of survivors of the Sudan Ebola virus still suffer serious health problems two years post-infection and the virus can persist in semen and breast milk for months after recovery, according to the first study examining the virus’s long-term effects.
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NewsScientists explore how viruses replicate and infect
Herpes viruses cultivated using one kind of host cell – known as a producer cell – exhibited differences from the same virus cultivated with a different producer cell.
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NewsResearchers deconstruct chikungunya outbreaks to improve prediction and vaccine development
Researchers analyzed more than 80 outbreaks of chikungunya virus to improve prediction of future outbreaks and inform vaccine trial development.
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NewsThe RESTART trial: a drug to block a toxic HIV molecule
What if the presence of a well-known but misunderstood viral protein explains why some people living with HIV (PLWH) never recover their health, even with antiretroviral treatment? Researchers will explore this in a groundbreaking clinical trial this fall.
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NewsSome human GII.4 norovirus are better than others at infecting cells; researchers have found out why
A study reveals that human GII.4 noroviruses have evolved a uniquely potent entry mechanism with clear strain-specific differences. The findings open new possibilities for identifying the elusive human norovirus receptor as well as developing vaccines and treatments.
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NewsNew antibiotic targets IBD — and AI predicted how it would work before scientists could prove it
The new antibiotic, enterololin, attacks and kills only a specific group of disease-causing bugs, which includes the type of E. coli that drives Crohn’s disease. It is a promising new treatment option for people affected by Crohn’s and other IBD-related conditions.
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NewsAncient plankton hint at steadier future for ocean life
A team of scientists has uncovered a rare isotope in microscopic fossils, offering fresh evidence that ocean ecosystems may be more resilient than once feared. They analyzed nitrogen isotopes preserved in the shells of tiny plankton called foraminifera.
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NewsCould a fungus provide a blueprint for next-gen hydrogels?
New research finds one fungal species, Marquandomyces marquandii, shows promise as a potential building block for new biomedical materials. It can grow into hydrogels, materials that hold lots of water and mimic the softness and flexibility of human tissues.
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NewsGenetic ‘Trojan horse’ selectively kills cancer cells linked to Kaposi’s sarcoma
A highly targeted gene therapy that could revolutionize treatment for cancers linked to a common herpesvirus harnesses an adeno-associated virus (AAV) to deliver a genetic “Trojan horse” into infected cells.
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NewsDo stranded dolphins have Alzheimer’s disease - and how are cyanobacteria involved?
Scientists have come up with an unusual hypothesis: perhaps dolphins become disoriented by suffering from a form of Alzheimer’s disease. It appears that Alzheimer’s-type neuropathology and disorientation may result from chronic exposure to toxic molecules produced by cyanobacteria.
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NewsGene editing, traditional crossbreeding produce disease-resistant cacao plants
Researchers reported that they edited the gene TcNPR3 in cacao plants, ultimately resulting in disease-resistant cacao plants that had 42% smaller disease lesions when infected with phytophthora, compared to non-edited plants.
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NewsCorals might be adapting to climate change, study shows
Researchers showed that despite a gradual increase in ocean acidity levels over the past 200 years, some corals seem to be able to adjust and continue to generate their hard, stony skeleton structures.
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NewsPeptide study paves path toward new weapon against antibiotic-resistant bacteria
New research into antimicrobial peptides, small chains of amino acids able to damage bacterial cells, shows why some peptides are more effective at doing that and also why some cells are more vulnerable.
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NewsCould bacteria help fix the smoky taste of wildfire-tainted wine?
New laboratory experiments show that a bacterium that lives on grape plants can break down guaiacol—an unpleasant-tasting substance which ruins wines made from grapes exposed to wildfire smoke.
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NewsEngineers use bacterial nanowires to create first artificial neurons that could directly communicate with living cells
Engineers have created an artificial neuron with electrical functions that closely mirror those of biological ones. Using protein nanowires synthesized from electricity-generating bacteria, the discovery could herald immensely efficient computers built on biological principles.
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NewsMicrobial DNA sequencing reveals nutrient pollution and climate change reinforce lake eutrophication
A new study using DNA sequencing of lakebed microbes reveals that nutrient pollution from agricultural runoff and climate change amplify each other in ways that profoundly affect the health of lake ecosystems.
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NewsSome plants can make their own fertilizer - scientists say they learned it more than once
In a new study, scientists show that chemical receptors that plants use to recognize nitrogen-fixing bacteria have developed the same function independently on at least three separate occasions through a process called convergent evolution.
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NewsScientist awarded $5 million to improve mental health and HIV care for adolescents in Uganda
The National Institutes of Health (NIH) has awarded Dr. Philip Kreniske $5,115,391 for a groundbreaking research project to improve mental health and antiretroviral treatment adherence among adolescents living with HIV in rural Uganda.
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NewsUnder half in US would recommend some routine vaccinations during pregnancy
Data from a new APPC health survey finds a reluctance among the public to recommend that someone who is pregnant get a Covid-19 vaccine, with just 38% saying they would do so. Less than half of the survey respondents (42%) say it is safe to take an mRNA Covid-19 vaccine during pregnancy.
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NewsRisk of long COVID in kids doubles after second infection
Children and adolescents were twice as likely to experience long COVID after catching COVID for the second time, compared to their peers with a single previous infection, results running counter to the popular perceptions that COVID in children is ‘mild’.