All The Americas articles – Page 3
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NewsStudy identifies protein that helps COVID-19 virus evade immune system
Discovery of a new viral evasion mechanism, and of a monoclonal antibody that subverts it, is an advance in immunotherapy that offers the prospect of effective host-directed treatment to combat infections.
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NewsMayaro and chikungunya viruses observed circulating at the same time in the Brazilian Amazon
Infection by one virus was expected to afford protection against the other, preventing co-circulation. Researchers are warning of the risk of transmission of Mayaro in urban areas due to deforestation and advocate more effective epidemiological surveillance.
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NewsResearchers reveals why recombinant BCG induces a stronger and longer-lasting response
Researchers are working on a more potent version of the BCG vaccine that protects against TB. While the conventional immunizer reduced infection by 90% in experiments with mice, the recombinant BCG increased protection rates to 99%.
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NewsInnovative test diagnoses chagas disease in newborns
The LAMP molecular diagnostic test, coupled with a modified 3D printer to extract DNA, has a sensitivity comparable to PCR, and can be used in laboratories with limited resources.
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NewsRevealed: new factor associated with the risk of severe COVID-19 in people with obesity
By analyzing samples from obese non-diabetics, researchers found that high blood levels of saturated fatty acids cause pre-activation of innate immune cells that, when infected with SARS-CoV-2, produce elevated levels of inflammatory molecules.
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CareersA day in the life of a phage expert
Nicolás Cifuentes is Head of Research Projects and Phages at PhageLab, Chile, which offers tailor-made solutions to control bacterial outbreaks in the livestock and poultry industries.
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NewsScientists identify molecules associated with recurrence in blood samples from malaria patients
Researchers have described for the first time possible biomarkers associated with recurrence of vivax malaria. The study involved analysis of blood samples from volunteers infected by Plasmodium vivax.
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NewsCold climate wheat varieties could provide answers to blast threat
New research unexpectedly reveals that wheat varieties with resistance to another pathogen, powdery mildew, also confer protection against wheat blast.
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NewsWild yeasts from Patagonia could yield new flavors of lagers
New strains of yeast for brewing lager beers, created by hybridizing wild strains of yeast from Patagonia with brewer’s yeast, can yield novel flavors and aromas, a new study reports.
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NewsScientists develop functional bread using probiotic yeast to help prevent asthma
Bread produced with probiotic yeast performed well in experiments with mice, showing potential to combat asthma, which affects 20 million Brazilians.
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NewsNew study explores sun’s effects on the skin microbiome
A new study delves into existing knowledge on solar radiation’s impact on the skin microbiome and proposes innovative sun protection methods that safeguard both skin integrity and microbiome balance.
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NewsGenome research reveals the global march of malaria
Researchers have reconstructed ancient Plasmodium genome-wide data from 36 malaria-infected individuals spanning 5,500 years of human history on five continents, reconstructing the worldwide spread of malaria and its historical impact.
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NewsMonitoring shows chikungunya epidemics can be predicted by means of surveillance
A study conducted in a medium-sized city in São Paulo state (Brazil) found that chikungunya, which has caused major epidemics in several countries, can also circulate silently in a community, with few infections for years.
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NewsNewly IDed cordycipitoid fungus infects caterpillars and nematodes, offering pest control hope
Researchers have described a new species of cordycipitoid fungi collected in Peru, whose sexual stage parasitizes Lepidoptera insects, while its asexual stage can infect nematodes and produce a large number of falciform conidia.
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NewsVirus that causes COVID-19 can remain in sperm for 110 days after infection
Researchers detected SARS-CoV-2 in male reproductive cells under the microscope even when PCR testing failed to detect the virus in semen. The discovery serves as a warning of possible implications for natural conception and assisted reproduction.
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NewsResearchers reveal how symbiotic bacteria adapt to big environmental changes
Faced with a drastically changing environment following the closure of the Isthmus of Panama, symbiotic bacteria in lucinid clams acquired new metabolic skills to enable their own survival, new research has revealed.
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NewsMolecule produced in gut can have protective effect against flu, study shows
In experiments with mice, researchers found that viral load and inflammation decreased in animals infected by influenza virus when they were given indole-3-propionic acid.
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NewsResearchers conduct first-ever study to characterize microbiota in saliva of weaned piglets on commercial farms in Brazil
The results show that oral fluid bacteria differ from fecal and environmental bacteria. Identification of these microorganisms can help diagnose infectious diseases and improve pork production.
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NewsExperts ID highly drug-resistant infections in patients who traveled to Mexico for stem cell treatments
Experts in mycobacterial diseases are investigating a potential outbreak of a highly drug-resistant mycobacterium after U.S. patients who traveled to Mexico for stem cell injections became sick.
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NewsAntibiotic resistance genes found deep in sediment of mangroves
Antibiotic resistance genes have been found deep in sediment within mangrove areas in Mexico, a new study has found.
