All USA & Canada articles – Page 3
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NewsResearchers discover large dormant virus can be reactivated in model green alga
Scientists have not only found a virus in the green alga Chlamydomonas reinhardtii but discovered the largest one ever recorded with a latent infection cycle, meaning it goes dormant in the host before being reactivated to cause disease.
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NewsKīlauea volcano’s ash prompted largest open ocean phytoplankton bloom
Through satellite tracking, a global study uncovered the reasons behind the stimulation of phytoplankton growth in the North Pacific Ocean, linking to the deposition of ashes to the major eruption of the Kīlauea Volcano in 2018 and nutrient deprivation in the ocean.
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NewsFiber consumption protects gut from serious bacterial infection, study suggests
Brazilian researchers have gained better understanding of the role of soluble dietary fibre in the mechanism of immune modulation and fight against gut pathogen Clostridioides difficile that causes severe diarrhoea and colon inflammation.
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NewsCertain nasal bacteria may boost the risk for COVID-19 infection, study finds
Certain types of nasal bacteria can affect the levels of key proteins the Covid-19 virus needs to enter human cells, offering new insight into why some people are more vulnerable to the disease than others.
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NewsInvesting in COVID-19 vaccination more than paid off for U.S., study finds
The US national Covid-19 vaccine strategy more than paid for itself after just one year, according to a new study. Because the vaccines reduced how many people developed serious illness or died, the nation saved more money than it spent.
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NewsA new smartphone-sized device can test for tuberculosis - here’s why that matters for children
Scientists have designed the first-of-its-kind portable device to deliver fast, low-cost TB results — no lab required — to fight the world’s deadliest infectious disease.
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NewsWith new database, researchers may be able to predict rare milky seas bioluminescent, glowing event
Researchers have compiled a database of sightings of bioluminescent ‘milky seas’, showing that sightings usually happen around the Arabian Sea and Southeast Asian waters and are statistically related to the Indian Ocean Dipole and El Niño Southern Oscillation.
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NewsViral ‘backbone’ underlies variation in rotavirus vaccine effectiveness
A new study has shown that full-genome differences between rotavirus strains influence vaccine effectiveness, highlighting the need for a broader approach to vaccine design.
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NewsResearchers uncover role of fungal circadian clock in pathogenicity
A new study reveals that the circadian clock plays a pivotal role in regulating Fusarium oxysporum’s response to zinc starvation—a core plant defense strategy—as well as in controlling secondary metabolism, thereby enhancing its virulence.
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NewsScientists discover new microbe phylum cleaning the water in Earth’s deep soil
Scientists have discovered a new phylum of microbes in the Earth’s Critical Zone, an area of deep soil that restores water quality. Ground water, which becomes drinking water, passes through where these microbes live, and they consume the remaining pollutants.
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NewsParasite avoidance study could shed new light on social distancing’s role in disease prevention
New research could shed light on just how important the simple but understudied strategy of social distancing for avoiding disease might be. The work will look at how organisms evolve to avoid parasites.
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NewsResearchers discover way to predict treatment success for parasitic skin disease
Researchers have discovered a way to predict whether a patient suffering from cutaneous leishmaniasis will respond to the most common treatment, potentially saving patients from months of expensive, ineffective and toxic medication.
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NewsNovel point-of-care technology delivers accurate HIV results in minutes
Scientists have developed new technology that could lead to the creation of a rapid point-of-care test for HIV infection competitive with traditional lab-based HIV testing in a fraction of the time and without the need for a stressful wait.
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NewsResearchers use AI to improve diagnosis of drug-resistant infections
Scientists have developed a new AI-based method that more accurately detects genetic markers of antibiotic resistance in Mycobacterium tuberculosis and Staphylococcus aureus — potentially leading to faster and more effective treatments.
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NewsHantavirus in Madagascar linked to black rats in agricultural areas
A new study reveals that the black rat is likely responsible for transmitting deadly hantaviruses in rural Madagascar, where forested landscapes have been converted to agriculture and settlements.
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NewsMolecules that fight infection also act on the brain, inducing anxiety or sociability
New research on a cytokine called IL-17 adds to growing evidence that immune molecules can influence behavior during illness.
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NewsNew research boosts future whooping cough vaccines
By blocking the pertussis toxin epitopes with new found antibodies, researchers improved the pertussis vaccines to provide stronger, long-lasting immunity for infected and high-risk infants.
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NewsNew COVID-19 drug shows greater promise against resistant viral strains
A new standalone oral drug candidate has proven to be effective against Paxlovid-resistant COVID-19 strain in animal models. It works with low doses and cause no drug interaction-induced side effects.
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NewsMicroscopy reveals signs of life in earth’s extremes, boosting search for alien life
Researchers used advanced microscopy to detect microbial biosignatures that help to identify the signs of life in extreme environments on Earth, thus also applicable in the search of life in extraterrestial environments.
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NewsAn antiviral chewing gum to reduce influenza and herpes simplex virus transmission
Researchers have used a clinical-grade antiviral chewing gum to substantially reduce viral loads of two herpes simplex viruses and two influenza A strains in experimental models. The chewing gum could also work against bird flu.