A new study shows that bacteria exhibit different genetic variations that have helped them adapt in different ways, allowing then to create a surprising number of genetic paths to survival within each patient.
Researchers have determined the structure of the rubella virus capsid protein, which is central to the virus's ability to assemble into an infectious particle and to infect humans.
Researchers reported that a virulent new strain of influenza appears to retain its ability to cause serious disease in humans even after it develops resistance to antiviral medications.
Global efforts to curb malaria are stalling after a drop in funds to buy bed nets, according to the latest report Wednesday from the World Health Organization. In 2010, 145 million bed nets were distributed; that fell to 92 million in 2011 and 70 million last year.
A new study shows out that mice with a mutation in the gene for the protease Tmprss2 do not become infected by flu viruses containing hemagglutinin type H1.
The herpes virus that produces cold sores during times of stress now has been linked to cognitive impairment throughout life, according to a new study.
Scientists have found that cells known primarily for tempering immune response also exist in injured muscle tissue, an unexpected role for regulatory T cells.
Researchers have identified a protein that causes loss of function in immune cells combatting HIV. The scientists report that the protein, Sprouty-2, is a promising target for future HIV drug development.
Researchers have used radioimmunotherapy to destroy remaining HIV-infected cells in the blood samples of patients treated with antiretroviral therapy, offering the promise of a strategy for curing HIV infection.
President Barack Obama announced a new initiative at the National Institutes of Health in pursuit of a cure for HIV, saying his administration is redirecting $100 million into the project to find a new generation of therapies.
Scientists have determined the most detailed picture yet of a crucial part of the hepatitis C virus, which the virus uses to infect liver cells. The new data reveal unexpected structural features of this protein and should greatly speed efforts to make an effective hepatitis C vaccine.
Currently, there are no reliable treatments for cryptosporidiosis, the disease caused by Cryptosporidium parvum, but that may be about to change with the identification of a target molecule by a group of researchers.
A recently discovered HIV strain leads to significantly faster development of AIDS than currently prevalent forms, according to new research.
It’s long been thought that in people and in mice the reshuffling of B-cells— called V(D)J recombination, after the B-cells’ antibody-coding V, D and J gene segments— occurs in two places: the bone marrow and the spleen. New research suggests that there may be one more place B-cells go to undergo recombination: the gut.
A government study offers a new theory on why the whooping cough vaccine doesn't seem to be working as well as expected. The research suggests that while the vaccine may keep people from getting sick, it doesn't prevent them from spreading whooping cough to others.
A research team has identified an immune cell protein that is critical to setting off the body’s initial response against viral infection.
Researchers are investigating the complex relationships between the spread of the HIV virus in a population and the actual evolution of the virus within each patient’s body using a new modeling approach that distinguishes between susceptible and infected individuals, capturing the full infection history.
Researchers have now solved the structure of a key protein in the Nipah virus, which could pave the way for the development of a much-needed antiviral drug.
Princeton University officials decided Monday to make available a meningitis vaccine that hasn't been approved in the U.S. to stop the spread of the sometimes deadly disease on campus.
In spite of the fact that the first antibiotics were discovered almost a century ago, infectious diseases such as tuberculosis, encephalitis and meningitis are still serious diseases for humans. The World Health Organization (WHO) estimates that there are more than 8 million new cases of tuberculosis per year on a global scale, and that more than 300,000 of these are due to multidrug-resistant strains that are difficult to treat.
The layers of skin that form the first line of defense in the body’s fight against infection have revealed a unanticipated secret. The single cell type that was thought to be behind the skin’s immune defense has been found to have a doppelganger, with researchers from the Walter and Eliza Hall Institute showing the cells, despite appearing identical, are actually two different types.
Friendly microbes in the intestinal tracts (guts) of healthy American children have numerous antibiotic resistance genes, according to results of a pilot study by scientists.
A strain of bird flu that scientists thought could not infect people has shown up in a Taiwanese woman, a nasty surprise that shows scientists must do more to spot worrisome flu strains before they ignite a global outbreak, doctors say.
A protein engineered by combining proteins active in HIV and Moloney murine leukemia virus (MLV) replication may lead to safer, more effective retroviral gene therapy.
U.S. experts are raising the alarm over the spread of drug-resistant malaria in several Southeast Asian countries, endangering major global gains in fighting the mosquito-borne disease that kills more than 600,000 people annually.