COVID-19 nasal swab test may not be best for those who've had sinus surgery

Shark scientists at Georgia Aquarium, Scripps Institution of Oceanography at UC San Diego, and Dalhousie University are challenging the status quo in shark and ray mating research in a new study that looks at biological drivers of multiple paternity in these animals. The results were published March 4 in the journal Molecular Ecology. Many species of sharks and rays exhibit multiple paternity, where females give birth to a litter of pups that have different fathers. While widely documented in scientific literature, the drivers of this phenomenon are not well understood. However, previous research has cited male aggression as ...

NEW YORK, NY (March 4, 2021)--Inflammatory heart disease is a rare finding among professional athletes with mild or asymptomatic COVID-19 infection, a large-scale study has found. The study, led by Columbia University Vagelos College of Physicians and Surgeons in collaboration with the major North American sports leagues and their respective players' associations, was published online today in JAMA Cardiology. Athletes and COVID-19 Studies suggest that approximately 20% of patients hospitalized with severe COVID-19 develop some type of heart damage, but the impact of mild or asymptomatic ...

March 4, 2021 -- COVID?19 has altered the labor market for millions of people, including public health graduates, yet an analysis of job postings for Master's level public health graduates showed that job postings remained at the same levels as before the pandemic, according to a new study at Columbia University Mailman School of Public Health. The findings are published in the International Journal of Health Planning and Management. "Due to the crucial role of disease prevention in responding to and recovering from the COVID?19 pandemic, assessing the public health workforce remains critically important," said Heather Krasna, MS, EdM, assistant dean of career services at Columbia Mailman School, and lead author of the study. "Fortunately, the job market for master's ...

PHILADELPHIA (March 4, 2021) - Equitable implementation of COVID?19 vaccine delivery is a national and global priority, with a strong focus on reducing existing disparities and not creating new disparities. But while a framework has been recognized for equitable allocation of COVID?19 vaccine that acknowledges the rights and interests of sexual and gender minorities (SGM), it fails to identify strategies or data to achieve that goal. A new study with support from researchers at the University of Pennsylvania School of Nursing (Penn Nursing) examined the prevalence ...

There is no stronger risk factor for cancer than age. At the time of diagnosis, the median age of patients across all cancers is 66. That moment, however, is the culmination of years of clandestine tumor growth, and the answer to an important question has thus far remained elusive: When does a cancer first arise? At least in some cases, the original cancer-causing mutation could have appeared as long as 40 years ago, according to a new study by researchers at Harvard Medical School and the Dana-Farber Cancer Institute. Reconstructing the lineage history of cancer cells in two individuals with a rare blood cancer, the team calculated when the genetic mutation that ...

Efforts to duplicate on Earth the fusion reactions that power the sun and stars for unlimited energy must contend with extreme heat-load density that can damage the doughnut-shaped fusion facilities called tokamaks, the most widely used laboratory facilities that house fusion reactions, and shut them down. These loads flow against the walls of what are called divertor plates that extract waste heat from the tokamaks. Far larger forecast But using high-performance computers and artificial intelligence (AI), researchers at the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL) have predicted a far larger and less damaging heat-load width for the full-power operation of ITER, the international tokamak under construction in France, than previous estimates ...

Humans and animals alike constantly size up one another. In the workplace, a new employee quickly learns which coworkers are the most respected -- and therefore hold more power. Big brothers boss around little brothers. In nature, a dominant male chimpanzee fights off would-be intruders. Even fish and octopi interact within social hierarchies. These pecking orders have been studied within the behavioral ecology world for almost 100 years. How individuals interact can affect access to food and mates -- even survival -- and insights into those behaviors can lead to better management of threatened and endangered populations. But few studies have explored what the animals ...

HOUSTON - (March 4, 2021) - A mutation that replaces a single amino acid in a potent tumor-suppressing protein turns it from saint to sinister. A new study by a coalition of Texas institutions shows why that is more damaging than previously known. The ubiquitous p53 protein in its natural state, sometimes called "the guardian of the genome," is a front-line protector against cancer. But the mutant form appears in 50% or more of human cancers and actively blocks cancer suppressors. Researchers led by Peter Vekilov at the University of Houston (UH) and Anatoly Kolomeisky at Rice University have discovered the same mutant protein can aggregate into clusters. These in turn nucleate the formation of amyloid fibrils, a ...

As you scroll through Amazon looking for the perfect product, or flip through titles on Netflix searching for a movie to fit your mood, auto-generated recommendations can help you find exactly what you're looking for among extensive offerings. These recommender systems are used in retail, entertainment, social networking and more. In a recently published study, two researchers from The University of Texas at Dallas investigated the informative role of these systems and the economic impacts on competing sellers and consumers. "Recommender systems have become ubiquitous in e-commerce platforms and ...

Woolly mammoths may have walked the landscape at the same time as the earliest humans in what is now New England, according to a Dartmouth study published in END ...