Articles tagged with Viral Infections
Researchers have developed a novel oral antiseptic spray, Halo, effective in killing 99.9% of infectious airborne germs, including influenza and rhinovirus. The spray prevents germs from entering the system and kills them, providing sustained protection for up to six hours.
Researchers tracked parasite-induced disease and death in reintroduced wolf packs in Yellowstone National Park, finding that mange did not infect wolves until 2007. The diseases that infected the wolves quickly were all viral, including canine distemper and parvovirus, while mange is a skin infection caused by scabies mites.
Researchers found Hematodinium sp. and its sister species are a major problem for crab fisheries, causing 'bitter crab' disease. The parasites have bacteria-like endosymbionts that increase their chances of survival outside the shrimp, leading to significant damage to infected crustaceans.
A new study suggests that children and young adults with chronic Hepatitis B Virus infection have a protective immune response, making them suitable treatment candidates. Young patients respond better to treatment and are more able to clear the virus due to their stronger immune system.
Researchers at Tel Aviv University have developed a treatment for coral infected with White Plague disease, a deadly bacterium that causes 9% of Favia favus corals to die. The treatment uses viruses that infect bacteria, providing a breakthrough in developing regionalized treatments.
Researchers developed a monoclonal antibody that protects chimpanzees from HCV infection in a dose-dependent manner. The study provides preclinical proof-of-concept for the use of neutralizing antibodies to prevent HCV transmission, which could lead to improved treatment options for patients with end-stage liver disease.
A study suggests that influenza can be transmitted before symptoms appear in ferrets, a model commonly used for flu research. The findings have significant implications for pandemic planning strategies and the control of epidemics.
Researchers found that climate change could disrupt the interactions between ruddy turnstone shorebirds and horseshoe crabs at Delaware Bay, leading to increased avian influenza infection rates. This could drive up the infection rate in resident ducks, potentially spreading novel subtypes among North American wild bird populations.
Cytomegalovirus (CMV) infection is a significant risk factor for type 2 diabetes in the elderly, according to new research. CMV infection can cause inflammation and damage pancreatic cells, leading to insulin resistance and increased glucose levels.
A recent study found that waiting to treat cytomegalovirus infections in transplant recipients until they reach a certain threshold is more beneficial than prophylactically treating all recipients. This approach led to less kidney scaring and better long-term organ survival among patients.
The West Nile virus has caused 26 deaths and nearly 700 cases in the US this year, with Texas being a hotspot. The cause of the increased cases remains unclear, but experts emphasize the need for continued research and public health efforts.
New CDC guidelines recommend universal HCV screening for all Americans born between 1945 and 1965, with strong evidence supporting the association between sustained virologic response and reduced liver cancer risk. Brief alcohol screening and intervention are also recommended for those diagnosed with HCV.
Researchers identified a whole new class of arenaviruses in snakes with Inclusion Body Disease (IBD), a deadly condition causing bizarre behavior and eventual death. The discovery could lead to development of treatments, vaccines, diagnostics, and prevention policies for IBD.
A novel arenavirus has been identified as the possible cause of inclusion body disease in snakes, a devastating illness that spreads easily among boas and pythons in captivity. The discovery may lead to the development of diagnostic tools and treatments to eradicate the disease from snake collections worldwide.
Researchers developed a targeted antisense approach to treat toxoplasmosis, reducing viable parasites by over 90% in mice. The therapy combines short nucleic acid strands with peptides to disrupt genetic signals, with potential applications in non-parasitic diseases.
Researchers have developed a vaccine that protects African green monkeys from Nipah virus, with all nine vaccinated animals surviving a lethal challenge. The vaccine is based on a Hendra virus surface protein and is in commercial development for use in horses.
Researchers successfully developed a highly effective vaccine against the deadly Nipah virus, which has shown complete protection in African green monkeys with no evidence of disease. The vaccine, known as Hendra-sG, is a recombinant piece of the virus produced in the laboratory and can be used safely for human treatment.
A comprehensive review of the recent medical literature evaluates the potential for reducing HPV-related illness burden by expanding routine vaccination to include young males. The authors present their recommendations on the cost-effectiveness of male HPV vaccination, which could lead to significant public health benefits.
Australian scientists have discovered a new bat virus, Cedar, which is closely related to deadly Hendra and Nipah viruses. The virus does not cause illness in several animal species normally susceptible to Hendra and Nipah, providing a surprising key difference.
A new study has found that 11% of people in remote Amazonian communities regularly exposed to vampire bats have natural protection against rabies. Ten percent appear to have survived exposure to the virus without medical intervention, suggesting a potential route for developing effective treatments.
A novel avian influenza virus has infected and killed harbor seals in New England, with the majority being infants under 6 months old. The research, published in mBio, reveals that the virus descended from an avian strain circulating in North American waterfowl since 2002.
A new strain of influenza virus found in harbor seals has adaptations to living in mammals and may pose a threat to human health. The virus's ability to target a receptor found in the human respiratory tract raises concerns about its potential to cause severe disease.
Scientists identify key players in the infection warning system within living cells, enhancing the body's defenses against viruses. RIG-I-like receptors and 14-3-3 epsilon protein interactions play a crucial role in detecting viral RNA and triggering an immune response.
A UNC-led team studied 2228 Kenyan men and found no evidence of HPV type competition after vaccination. The study suggests that different HPV types act independently, making it unlikely for type-replacement to occur following large-scale vaccination programs.
Researchers found that silymarin supplements did not improve liver function or reduce symptoms in patients with treatment-resistant chronic hepatitis C. The study suggests that alternative treatments may be needed for this disease, which affects nearly 3% of the global population.
A pilot study found that adding vitamin B12 to standard hepatitis C virus treatment significantly boosts the body's ability to keep the virus at bay, especially in patients with genotype 1 HCV or high viral loads. The treatment strengthened the rate of sustained viral response by 34%.
A recent study suggests that CD4+ T helper cells play a crucial role in controlling hepatitis A virus infection by suppressing virus growth without causing liver damage. This finding may explain why some patients relapse after clearing the infection.
Researchers have identified two viruses that infect symbiotic microalgae essential for coral growth and health. The presence of these viruses could be a contributing factor to the decline of coral reefs worldwide. Corals face various environmental threats, including warming temperatures, competition, and pollution.
Research from the University of Melbourne found that two different vaccine viruses used simultaneously to control infectious laryngotracheitis in chickens combined to produce new infectious viruses, resulting in disease outbreaks. The new strains caused more severe disease and replicated at higher levels than the parent vaccine strains.
Einstein researchers will investigate NPC1's role in infection within different species, including bats and rodents. The study aims to pinpoint possible targets for antiviral drugs designed to combat Ebola.
Researchers found that prions can accumulate in the gut and infect the autonomic nervous system (ANS) before affecting the central nervous system (CNS). The study identified three possible routes for BSE prion ascension to the brain, shedding light on the pathogenesis of the disease.
EP67, a powerful synthetic protein, is able to activate the innate immune system within two hours of administration, preventing flu symptoms. The study found that EP67 functions similarly across different flu strains, offering a promising alternative to traditional vaccines.
West Nile virus infection causes breakdown of two vital proteins, claudin and JAM, leading to accelerated degradation of the blood-brain barrier. Researchers hope to design drugs that prevent brain infection by understanding this mechanism.
The new FMD vaccine is a molecular vaccine that does not use live FMD virus, allowing for differentiation between vaccinated and infected animals. This breakthrough could significantly reduce the economic impact of FMD outbreaks in the US, with potential cost savings estimated to exceed $50 billion.
A collaboration between US research centers highlights three disease characteristics that determine whether an outbreak becomes a serious epidemic: pre-symptom transmission, reproductive number, and disease stage length. Simulation models demonstrate that current response plans may underestimate consequences significantly.
Researchers developed mathematical models to investigate viral control factors, revealing that innate immune responses, such as natural killer cells and interferon, explain the initial rapid decline and subsequent second peak of viral levels. Ultimately, the adaptive immune response is necessary for eventual viral clearance.
A new study found that the number of viruses involved in a flu infection impacts the immune response, with high-dose infections generating stronger immunity and increased protection against reinfection. This discovery could lead to improved vaccine design and broader protection against emerging flu strains.
Researchers discovered a new gene in the influenza virus that helps control the body's response to infection, reducing the impact of the disease. The PA-X gene was found to be active in mice infected with flu, leading to recovery, while its malfunction led to an overactive immune system and worsened infections.
Researchers at Caltech have developed a method to measure the rate of DNA transfer from viruses to bacteria. They found that the amount of genetic material within the bacterial cells determines how quickly the bacteriophage's DNA is transferred, not the pressure in the virus itself.
University of Texas Medical Branch researchers developed a more effective Rift Valley fever vaccine by removing the NSs gene and introducing a dominant negative PKR, improving immune response in large animals and health workers. The new vaccine strain offers enhanced differentiation between infected and vaccinated animals.
Researchers at Aarhus University have discovered a new immune alarm signal that triggers the human immune system before a virus attack. This knowledge may lead to more efficient vaccines and better treatment of recurrent infections, potentially reducing the risk of diseases like AIDS, hepatitis, influenza, and cold sores.
Researchers from the University of Cambridge found that avian H5N1 influenza viruses could potentially acquire mutations necessary for airborne transmission in nature. The study suggests that with as few as five mutations, or four mutations plus reassortment, these viruses can become airborne transmissible between mammals and humans.
Researchers found that feeding mice house dust from dog-holding homes protected them against a common respiratory virus, RSV. The study suggests that microbes in the dust may modulate immune responses and protect against the virus.
A new study published in Immunity reveals that commensal bacteria play a vital role in fighting off viral infections. The research found that signals from these beneficial microbes are essential for optimal immune responses to experimental viral infections, and their absence can lead to impaired antiviral immunity.
Researchers at the University of Nevada, Las Vegas have identified three viruses that target the bacteria causing American Foulbrood Disease in honeybees. The discovery offers hope for a new treatment to replace current methods that involve burning infected hives and could help save millions of bees.
A new study suggests that chronic hepatitis B virus infection may be as high as 2.2 million cases in the US, with foreign-born individuals contributing significantly to this burden. The prevalence is higher than previously reported and affects up to 400 million individuals worldwide.
The study found that local variation in neighborhood immunity significantly alters the risk of dengue infection, even in highly mobile and dense urban populations. Infection with dengue provides lifelong immunity to the infecting serotype, but susceptibility returns, increasing the risk for severe disease.
A new study from researchers in the Netherlands found no association between viral infections during infancy and later childhood wheezing symptoms. However, children with reduced neonatal lung function were more prone to experience wheezing during viral infections.
Researchers found that patients taking oral acne medications like Accutane or Roaccutane doubled their risk of developing conjunctivitis, also known as pink eye. Using artificial tears or eye drops can help minimize this risk and prevent long-term damage.
A study published in PLoS Pathogens found that the rabies virus evolves nearly four times faster in tropical bats than in temperate bats. The rate of evolution depends on the bat's ecological traits, including its geographical location and behavior.
Babies with a robust innate immune response have fewer respiratory illnesses in their first year, while those with a diminished response experience more infections. Researchers measured interferon-gamma levels in umbilical cord blood samples to identify potential indicators of viral infection.
Researchers use molecular signatures to detect mutated virus strains, identifying characteristic changes in cells. The technique helps predict the severity of infection and assess potential impact on health.
Researchers from A*STAR identified the molecular switch Bruton's tyrosine kinase (BTK) that triggers innate immunity and activates potent virus killers, enabling effective responses to dengue and influenza viruses. The discovery paves the way for developing anti-viral drugs targeting BTK.
An investigation found that a reusable open-top grocery bag stored in a hotel bathroom contaminated with norovirus aerosol led to an outbreak among 17 girls and their chaperones attending a soccer tournament. Proper disinfection of areas and use of multiple bathrooms can help limit outbreaks.
New estimates suggest that around 16% of all cancers worldwide are infection-related, with a significant disparity between developed and developing countries. Infection-related cancers are largely preventable, particularly those associated with human papillomaviruses, Helicobacter pylori, hepatitis B and C viruses.
A study published in Nature shows that relatively few amino acid mutations enable avian H5N1 influenza virus to transmit in mammals. This breakthrough has significant public health benefits and contributes to understanding the pathogen's transmission dynamics.
Research published in the Journal of Leukocyte Biology suggests that vitamin D supplementation can strengthen innate immunity against viral infections. The study found that vitamin D insufficiency is associated with impaired immune function and lower levels of toll-like receptor 7, which regulates immune responses to viruses.
Researchers discover small molecule inhibitors that protect a tumor-suppressing protein targeted by viral proteins, killing infected cells. The inhibitors work by binding to the protein itself, allowing it to trigger normal cell division without disrupting the effect of HPV.
A study revealed that ancient viruses, which infected ancestors as far back as the age of dinosaurs, became widespread in mammals' genomes due to a loss of cell infectivity. This led to a dramatic increase in viral genetic material, resembling the spread of 'superspreaders' during epidemic outbreaks.
University of Missouri veterinarian Leah Cohn has discovered an effective treatment for cytauxzoonosis, a deadly feline disease spread by Lone Star ticks. The treatment has been shown to save about 60 percent of infected cats, offering new hope for cat owners nationwide.