Articles tagged with Viral Infections
Results from the SOLAR 2 trial show that ledipasvir/sofosbuvir in combination with ribavirin is safe and effective in patients with decompensated liver disease or who have undergone liver transplantation. High sustained virologic response rates were achieved, even among treatment-experienced patients.
A new study suggests that cloth masks used by healthcare workers in Vietnam increased their risk of contracting respiratory illnesses. The trial found that cloth masks allowed almost 97% of particles to pass through, compared to medical masks with 44%. Experts warn against the use of cloth masks in healthcare settings.
Researchers from UTMB and Tekmira Pharmaceuticals have developed a post-exposure treatment effective against a specific strain of Ebola. The treatment uses siRNA to target and neutralize the virus, demonstrating potential benefits beyond improved survival rates.
Despite significant genetic mutations, Ebola's functional level has remained the same over the past four decades. This suggests that vaccines and treatments developed during current outbreaks may be effective against future outbreaks.
A study found that some dogs can mount an immune response to human norovirus, suggesting they may be infected. However, the risk of canine infection and transmission to humans is unclear.
Researchers at the University of Illinois have identified a new mastrevirus, SgMaV-1, infecting switchgrass in North America. The virus is closely related to known pathogens in Australia and may be transmitted by leafhoppers, posing risks to staple food crops like corn and wheat.
Researchers have found that the Ebola virus uses a protein called VP35 to remove its genetic material's protective coat, allowing it to replicate. Disrupting this process could potentially stop the spread of the disease.
A study published in Science Translational Medicine found that Wolbachia can block dengue virus infection in mosquitoes, leading to a significant reduction in transmission. The discovery has the potential to improve strategies for controlling dengue outbreaks, particularly in regions with low or moderate intensity of transmission.
A genetic mutation combined with an urban environment increases the risk of severe respiratory syncytial virus (RSV) disease in children. Children from urban middle-class families were eight times more likely to be hospitalized, a risk similar to extremely premature babies.
A new tool uncovers some surprises in diagnosing Ebola by identifying six key symptoms: contact with an infected person, diarrhea, loss of appetite, muscle pain, difficulty swallowing and absence of abdominal pain. This score can help clinicians risk-stratify patients during outbreaks.
Recent study reveals that microbes like Sulfolobus islandicus can freeze in place when infected with a harmless virus, such as Sulfolobus spindle-shaped virus 9 (SSV9), to protect themselves. The dormant microbes recover if the virus is removed within 24-48 hours, otherwise they die.
Two studies published in Infection Control & Hospital Epidemiology detail the challenges of caring for patients with suspected or confirmed Ebola Virus Disease (EVD) in hospitals. Key findings include staffing shortages, delays in patient care, and anxiety among staff and patients due to high-profile cases.
Researchers found that a protein called senataxin plays a crucial role in moderating the inflammatory response to certain viral infections. This discovery may lead to new avenues for treating neurological diseases like ALS and ataxia, which are associated with persistent inflammation.
Scientists have found that senataxin, a protein associated with neurodegenerative diseases, plays a key role in the body's natural antiviral response. Abnormal inflammation generated by senataxin deficiency may contribute to disease progression in conditions like ALS.
The chikungunya virus is predicted to soon spread to the US, causing a painful and potentially debilitating disease. Researchers are working on understanding how the virus enters the human body and developing vaccines, but progress is hindered by challenges in clinical trials.
A Singapore-led study reveals that HBV exposure before birth matures infants' immune systems, countering bacterial infections. This paradigm shift may change treatment guidelines for chronic hepatitis B patients, especially young adults and potentially even children.
A multivalent vaccine candidate induced broad antibody responses in trial participants, including to non-vaccine strains, suggesting a possible solution to evading immunity. The study provides evidence that VLP-based vaccines may overcome antigenic drift, but further development and clinical trials are needed for a vaccine suitable for...
A new study found that unpredictable division patterns in HPV-infected stem cells play a critical role in eradicating the virus. This finding suggests that tweaking infected cell division patterns may help clear HPV infections and lower cancer risk.
A team of UC Santa Barbara scientists discovered a new virus that selectively targets one gene for mutation, allowing it to thrive in extreme environments. They also found that some archaea do the same, targeting multiple genes and accelerating genetic variation through guided mutation.
A large multicenter study validates MeMed's ImmunoXpert test, which accurately characterizes the cause of acute infections by decoding the body's immune response. The test outperforms routine biomarker and laboratory tests, enabling physicians to make better informed treatment decisions.
Scientists have discovered 63 genes linked to rabies sensitivity, with potential applications in prevention and treatment. The study's novel screening method can be used to uncover host-based genes involved in various infections and responses to drugs.
Researchers at the University of Exeter discovered that bacteria can evolve a permanent immune response to phages, but also induce a temporary CRISPR response for low-risk conditions. This finding has implications for industrial bacterial cultures and could lead to more efficient and cost-effective methods.
Researchers have identified tiny differences in the outer shell proteins of different hepatitis C viruses that make them resistant to antibodies. The study found that these protein variations are not located where antibodies attach, requiring multiple antibodies to be stimulated for an effective vaccine. Future research will focus on i...
A recent MIT study suggests the swine flu strain in India has acquired mutations that make it more deadly, contradicting previous reports. The researchers stress the need for better surveillance to track the outbreak and develop an effective response strategy.
Researchers at Scripps Research Institute analyzed two influenza strains, H10N8 and H6N1, and found that they have not acquired changes allowing them to infect humans easily. However, the viruses' versatility in attaching to host cells suggests continued caution against potential pandemics.
Researchers analyzed T and B cells from four Ebola survivors, finding surprisingly high levels of immune activation. The findings contradict previous research suggesting impaired immune responses and have implications for developing vaccines against Ebola.
Researchers have discovered a nanobody called Nano-85 that can bind to intact norovirus-like particles, detecting virus in one-third of stool samples. This finding could lead to the development of an antiviral therapy for norovirus infections, particularly beneficial for immunosuppressed individuals.
A physician who received an experimental Ebola vaccine after a needle stick injury developed mild symptoms but strong Ebola-specific immune responses. The study found the patient's clinical syndrome and laboratory evidence consistent with vaccination response, with no evidence of Ebola virus infection detected.
The Nebraska Biocontainment Unit implements a rigorous process to handle Ebola patients, including two blood samples confirmed undetectable for the virus before discharge. Environmental decontamination involves 48-hour isolation followed by manual disinfection, UVGI, and multiple air exchanges.
A study found that fleas on rats in New York City can transmit plague pathogens, as well as several other diseases. Public health officials are advised to monitor city rats and implement Integrated Pest Management (IPM) practices to prevent the spread of disease.
Scientists confirm that HIV-1 groups O and P originated in western lowland gorillas, according to a comprehensive survey of SIV infection in African gorillas. The study's findings have implications for understanding the genesis of emerging diseases and may provide insights into future human infection risks.
Researchers identified distinct immune changes in patients with chronic fatigue syndrome (ME/CFS), providing robust physical evidence of the disease's biological nature. The study's findings could improve diagnosis and treatment options for the debilitating disorder.
The NIH/National Institute of Allergy and Infectious Diseases has launched a clinical trial to test the safety and efficacy of ZMapp, an experimental Ebola treatment. The study will enroll adults and children with known Ebola infection and compare the treatment to standard care.
A collaborative team identified mechanisms involved in antibody response to the Marburg virus by studying a survivor's blood. The study reveals that the human immune system can effectively fight Marburg virus infections by producing antibodies.
Human antibodies have been isolated and characterized that can neutralize the Marburg virus, a close cousin to Ebola. The discovery could lead to the development of an effective treatment and vaccine against these often lethal viruses. Researchers hope to complete clinical safety trials by the end of the year.
The JIKI clinical trial found encouraging signs of efficacy for favipiravir in individuals with high or moderate viral replication and less severe visceral lesions. In contrast, patients with very high viral loads and serious visceral involvement showed no efficacy from the treatment. These findings have implications for Ebola virus di...
A new approach to tackling alphavirus infections has been developed using the protein pentraxin 3, which plays a crucial role in promoting virus infection and disease. This breakthrough discovery paves the way for improved vaccine and drug development.
A potent dengue-neutralizing antibody, 5J7, has been identified with a tiny amount needed to stop the infection of dengue serotype 3 virus (DENV-3). This breakthrough finding offers hope for developing effective dengue treatments.
A study published in Journal of Biological Chemistry identifies CCL28 as a key player in inducing asthma pathology even without a viral infection. This finding opens the door for developing potent and specific CCL28 inhibitors to prevent post-viral asthma in young children.
A recent NIH study found that Ebola virus can remain infectious in a body for at least seven days after death, with viral RNA detectable for up to 10 weeks. The research highlights the importance of safe handling practices and suggests oral swabbing as a reliable alternative for obtaining diagnostic samples.
Researchers discovered that the immune system can turn off cellular enzymes needed by the Influenza A virus, which could lead to new treatments for flu. The study found that PAI-1 protein plays a key role in this process, and its inhibitors may be used to combat viral infections.
Researchers found evidence of prior exposure to Ebola virus among patients with Lassa fever in Sierra Leone between 2011-2014. The discovery suggests that the deadly disease may have been circulating in the area for years before the 2014 outbreak, sparking hope for prevention and control strategies.
Researchers at Gilead Sciences and Beryllium published structural data on HCV polymerase during RNA replication, shedding light on the NS5B catalytic mechanism. This information will be useful in identifying replication inhibitors of other pathogenic viruses in the Flaviviridae family.
A new variant of the rabbit hemorrhagic disease virus is threatening the survival of the Iberian lynx, a predator that relies heavily on wild rabbits for prey. The study found a significant decline in rabbit populations and a notable drop in the number of Iberian lynx cubs born in the wild.
Research by Griffith University's Institute for Glycomics has made a significant breakthrough in tackling the human parainfluenza virus, which causes respiratory infections such as croup and pneumonia. The team has demonstrated how the virus engages specific sugars to spread and cause infection.
Researchers found that targeting a single protein, VP24, was sufficient to protect monkeys from Ebola virus infection. The medication, AVI-7537, also reduced viral load and liver/kidney damage in infected animals.
Scientists developed an antiviral compound targeting VP24, a key protein in the Ebola virus, which protected 75% of infected monkeys. The compound, AVI-7537, was found to be safe and well-tolerated, offering hope for developing effective therapies against the deadly disease.
Research suggests that immuosuppressives and anti-cancer drugs can reanimate hepatitis B in previously infected individuals, according to a study published in Hepatology. The study authors emphasize the importance of routine screening for HBV before starting treatment with immunosuppressives or anti-cancer drugs.
Researchers from Arizona State University and Georgia State University model the impact of timely diagnostic testing on Ebola's spread across populations. Early detection provides the opportunity to safely isolate and treat individuals before they become contagious, significantly reducing the number of infected individuals.
A new study found that humans carry fewer endogenous retroviruses in their genomes compared to other mammals. This decrease may be attributed to a less bloody evolutionary history, with reduced exposure to blood-borne viruses as humans transitioned from biting during conflicts and hunting.
Researchers found that blood tests can produce similar results for patients with Chikungunya virus and those with rheumatoid arthritis, highlighting the need for diagnostic tools. Detailed travel histories are crucial to distinguish between the two conditions.
A study found that canine distemper in lions is no longer primarily spread by domestic dogs but rather by multiple wild carnivore species. The virus can jump between species in natural ecosystems, threatening vulnerable populations.
Researchers at the University of Georgia have successfully tested a new treatment on mice that cures the disease even after the virus has spread to the brain. The new vaccine rescues mice much longer after infection than what was traditionally thought possible, with 50% of treated mice saved even after physical symptoms appear.
A new report reveals that H7 influenza viruses regularly shuffle combinations of genetic segments, each with its own history of travel among hosts and geographic places. The study uses genomic analysis to visualize the spread of H7 genes across vast distances, identifying transboundary and transcontinental transmission.
Researchers investigated Ebola's deadly nature, discovering that genetic changes enable the virus to become more severe with each transmission. The study sheds light on the evolutionary goal of Ebola virus to become more lethal, informing future treatment strategies.
The 2015 Louis-Jeantet Prize for Medicine was awarded to Emmanuelle Charpentier and Rudolf Zechner for their pioneering work on harnessing bacterial immunity to develop genome editing technology, known as CRISPR-Cas9. The prize also recognizes Zechner's contributions to understanding lipid metabolism and its role in various diseases.
Experts argue that widespread hepatitis C screening may not lead to net clinical benefit, citing potential harms and a lack of strong evidence. Many patients infected with hepatitis C will not develop end-stage liver disease, rendering unnecessary treatment.
A new study shows that cold atmospheric pressure plasma significantly reduced the number of virus particles in norovirus samples, making it a promising method for continuous disinfection of contaminated surfaces. The technology is environmentally friendly and effective against viruses with high tenacity, like noroviruses.
Researchers at Washington State University have found a brain protein called AcPb that helps regulate sleep and speeds up animal recovery from influenza. The study reveals that without this protein, animals develop more severe symptoms of infection and die at higher rates.
Stephanie Stanford, Ph.D., has been awarded a $1.6 million grant by the American Diabetes Association to investigate the genetic and environmental causes of type 1 diabetes. The grant will support her research on the PTPN22 gene mutation that significantly increases the risk of type 1 diabetes.