A dangerous new Covid variant from China is surging in California, health officials warn. The California Department of Public Health warned this week the highly contagious NB.1.8.1 strain has been detected in the state, making it the sixth US state to be exposed. The variant has also been detected in international travelers arriving in Washington state, Virginia, Hawaii, Rhode Island and New York [...]
Scientists have documented the way a single gene in the bacterium that causes bubonic plague, Yersinia pestis, allowed it to survive hundreds of years by adjusting its virulence and the length of time it took to kill its victims, but these forms of plague ultimately died out. A study by researchers at McMaster University [...]
The COVID-19 pandemic highlighted the need for adaptable and scalable vaccine technologies. While mRNA vaccines have improved disease prevention, most are delivered by intramuscular injection, which may not effectively prevent infections that begin at mucosal surfaces, such as the nose and lungs. For respiratory pathogens, this limits protection at the initial site of infection. [...]
A new material developed at Cornell University could significantly improve the delivery and effectiveness of mRNA vaccines by replacing a commonly used ingredient that may trigger unwanted immune responses in some people. Thanks to their ability to train cells to produce virus-killing proteins, mRNA vaccines have gained popularity over the last five years for [...]
Invisible plastics in the air are infiltrating our bodies and cities. Scientists reveal the urgent health dangers and outline bold solutions for a cleaner, safer future. In a recent review article published in the journal Ecotoxicology and Environmental Safety, researchers discussed the sources, detection methods, health impacts, and mitigation strategies for airborne microplastics and nanoplastics. [...]
A new global review reveals how rapidly evolving H5 bird flu viruses are reaching new species, including dairy cattle, and stresses the urgent need for coordinated action to prevent the next pandemic. Since its discovery in 1996, the Gs/Gd lineage of highly pathogenic avian influenza viruses with H5 haemagglutinin, including H5N1 and other H5Nx [...]
A new, easily adopted, 3D-printed device will enable scientists to create models of human tissue with even greater control and complexity. An interdisciplinary group of researchers at the University of Washington and UW Medicine led the development of the device. 3D tissue engineering, which recently has undergone other major advances in speed and accuracy, helps biomedical researchers design [...]
Researchers at the Francis Crick Institute and UCL have analyzed ancient DNA from Borrelia recurrentis, a type of bacteria that causes relapsing fever, pinpointing when it evolved to spread through lice rather than ticks, and how it gained and lost genes in the process. This transition may have coincided with changes in human lifestyles, like [...]
Summary: A large study suggests that symptomatic infection with herpes simplex virus 1 (HSV-1)—best known for causing cold sores—may significantly raise the risk of developing Alzheimer’s disease. Researchers found that people with HSV-1 were 80% more likely to have Alzheimer’s, while those treated with antiviral medications had a 17% lower risk. The findings align with [...]
A recent study published in Small addresses the persistent difficulty of treating refractory melanoma, an aggressive form of skin cancer that often does not respond to existing therapies. Although diagnostic tools and immunotherapies have improved in recent years, a substantial number of patients remain unresponsive to current treatment options, highlighting the need for alternative therapeutic approaches. [...]
