All The Americas articles – Page 5
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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.
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NewsInternational Vaccine Institute, Baylor College of Medicine, and Regional Center for Innovation in Vaccines and Biopharmaceuticals AIP exchange an MOU
The International Vaccine Institute (IVI), an international organization with a mission to discover, develop, and deliver safe, effective, and affordable vaccines for global health, Baylor College of Medicine (Baylor), health science university and a Texas nonprofit corporation, and the Regional Center for Innovation in Vaccines and Biopharmaceuticals (CRIVB) AIP, a ...
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NewsLoss of large herbivores affects interactions between plants and their natural enemies, study shows
Researchers in Brazil compared leaf damage caused by insects and pathogens in areas with and without the presence of mammals such as tapirs, deer and peccaries.
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NewsAnalysis of flour and rice in Brazil shows high levels of harmful fungal toxins
The foods, found in the homes of Brazilian families participating in the research, were stored for future consumption. The study is the first in Brazil to use biomarkers to characterize the risk associated with mycotoxins in the diet.
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NewsCalcium can protect potato plants from bacterial wilt
Scientists have discovered that calcium plays a significant role in enhancing the resistance of potato plants to bacterial wilt. This disease causes worldwide losses of potatoes costing $19 billion per year.
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NewsCelebrity weight-loss drug helps people with HIV fight fatty liver, study shows
Scientists have found that a medication used to treat diabetes and obesity – and touted on social media for weight loss – can be a powerful weapon against a type of fatty liver disease in people with HIV.
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NewsTropical red seaweed protects Ostrea edulis larvae against pathogen
A new study finds that extracts of tropical red seaweed Acanthophora spicifera are a natural alternative for pathogen control management in O. edulis cultures.
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NewsStudy confirms effectiveness of bivalent COVID-19 vaccine
A major bivalent COVID-19 vaccine induces production of neutralizing antibodies against the coronavirus that circulated at the start of the pandemic as well as subvariants of omicron, albeit less abundantly, according to a new study.
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NewsHidden biosphere unveiled beneath world’s driest hot desert
In a finding with implications for the search for extraterrestrial life, researchers have discovered microbial life 13 feet below Earth’s most inhospitable desert.
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NewsStudy uncovers molecular mechanism of chemical diversity of thermophilic fungus
The new findings might explain why Thermomyces species with a large reduced genome can survive in the biosphere where temperatures are often below their growth temperatures.
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NewsDNA vaccine against zika performs well in tests on mice
A Zika vaccine developed in Brazil and tested on mice has been found to be efficacious, inducing an immune response against the virus and protecting the animals appropriately.
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NewsArboviruses, mosquitoes and potential hosts tracked in real time
The technology used to sequence the first infections by SARS-CoV-2 at record speed has been successfully tested as a technique to monitor viruses transmitted by mosquitoes, such as dengue, zika, chikungunya and yellow fever.
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NewsInauguration of the Institut Pasteur de São Paulo
A ceremony has taken place in Brazil to mark the inauguration of the Institut Pasteur de São Paulo, the latest member of the Pasteur Network.