viruss

Just as a tight core is a component of good physical fitness for humans, helping to stabilize our bodies, mutations that tightened the core of the SARS-CoV-2 spike protein in new variants may have increased the virus's fitness. New research…

Scientists studying a COVID-19 coronavirus enzyme at temperatures ranging from frosty to human-body warm discovered subtle structural shifts that offer clues about how the enzyme works. The findings, published in IUCrJ, the journal of the…

Instead of relying on the cell's repair mechanisms, the vaccinia virus MacGyvers a tool for DNA repair from one that it already uses to copy DNA, reports a team of researchers at the Medical University of South Carolina (MUSC) in the…

For the HIV-1 virus, a double layer of fatty molecules called lipids not only serves as its container, but also plays a key role in the virus's replication and infectivity. Scientists have used supercomputers to complete the first-ever…

Rift Valley fever virus causes economically devastating outbreaks of hemorrhagic fever in livestock such as sheep, goats and cattle. These mosquito-borne outbreaks lead to infection in people working with dead or dying animals, sometimes…

The director of national intelligence delivered a report to President Biden on Tuesday on the origins of the coronavirus epidemic, according to U.S. officials, but the nation’s spy agencies have not yet concluded whether the disease was the…

Experts studying the origins of the coronavirus for the World Health Organization warned on Wednesday that the inquiry had “stalled” and that further delays could make it impossible to recover crucial evidence about the beginning of the…