A virus is a microscopic infectious agent that can reproduce only inside a host cell. Viruses infect all types of organisms: from animals and plants, to bacteria and archaea. Since the initial discovery of tobacco mosaic virus by Martinus Beijerinck in 1898, more than 5,000 types of virus have been described in detail, although most types of virus remain undiscovered. Viruses are ubiquitous, as they are found in almost every ecosystem on Earth, and are the most abundant type of biological entity on the planet. The study of viruses is known as virology, and is a branch of microbiology.
Only 21 percent of patients with severe pneumonia caused by SARS-CoV-2 (the virus that causes COVID-19) have a documented bacterial superinfection at the time of intubation, resulting in potential overuse of antibiotics, according to new research published online in the American Thoracic Society's American Journal of Respiratory and Critical Care Medicine.
The virus that causes COVID-19 today is not the same as the one that first sickened people way back in December 2019.
According to recent research, rare, single-nucleotide variants in the MX1 gene increase the human susceptibility to zoonotic H7N9 avian influenza infection.
Since the early days of the COVID pandemic, scientists have aggressively pursued the secrets of the mechanisms that allow severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) to enter and infect healthy human cells.
Although the development and increasingly widespread availability of effective and safe vaccines provides the greatest hope for the future recovery from the increasingly devastating COVID-19 pandemic, genomic surveillance is emerging as a vital necessity to achieve effective mitigation and containment.
Despite causing a surge in infections this summer that has resulted in thousands of hospitalizations and deaths, the delta variant of the virus that causes COVID-19 is not particularly good at evading the antibodies generated by vaccination, according to a study by researchers at Washington University School of Medicine in St. Louis.
New mutations of the SARS-CoV-2 virus have been emerging continuously, enabling a more potent spread of the virus and allowing it to evade antibodies.
The single-stranded genetic material RNA is best known for guiding the assembly of proteins in our cells and carrying the genetic code for viruses like SARS-CoV-2 and HIV.
Scientists, for the first time, developed a successful method for pinpointing proteins within different kinds of neurons in the brain of a living animal.
The dining time of different insects impacts a plant's defenses and nutritional quality-;a complexity uncovered in new research with implications for pest management strategies.
Increased air pollution in recent years has not only contributed to deteriorating environmental conditions in cities across the globe.
Scientists have discovered that individuals recovering from COVID-19 produce identical clones, or groups, of antibody-producing white blood cells.
Three geneticists from RIKEN identified previously undetected snippets of genetic material from viruses that were hidden in human DNA.
Using a virus to purposely mutate genes that produce cancer-driving proteins could shed light on the resistance that inevitably develops to cancer drugs that target them, a new study led by UT Southwestern scientists suggests.
Cambridge scientists have grown beating heart cells in the lab and shown how they are vulnerable to SARS-CoV-2 infection. In a study published in Communications Biology, they used this system to show that an experimental peptide drug called DX600 can prevent the virus entering the heart cells.
Scientists are exploring a novel screening approach that concentrates on the recognition of virus-specific morphological changes in virus-infected cells.
New research offers insight into the origins of the 2012 Bundibugyo viral disease outbreak in the Democratic Republic of the Congo.
Scientists have developed and tested a library of lipid-based compounds for the safe and effective delivery of RNA drugs to the lungs.
New research conducted in monkeys reveals that T cells are not critical for the recovery of primates from acute COVID-19 infections.
Scientists have created an “atlas” that charts how 152 different antibodies attack a major piece of the SARS-CoV-2 machinery, the spike protein.