Articles tagged with Hepatitis A
The CDC recommends shared clinical decision-making for some childhood vaccinations, allowing parents to choose or skip certain vaccines. However, a survey found that many Americans are unclear about what this means and who can be included as health care providers in the discussion.
A nationwide study in Ukraine found substantial lifetime exposure to hepatitis B and C viruses, with significant ongoing circulation among the population. The study emphasizes the need for hepatitis B vaccination among infants and risk groups, as well as regular screening, treatment, and awareness-raising efforts.
The EU/EEA is struggling to reach 2030 SDG targets for HIV, TB, viral hepatitis B and C, and STIs, with many countries not on track. Despite progress in some areas, significant data gaps hinder a complete assessment.
Researchers tested various disinfectants to inactivate hepatitis A virus particles, finding only a few effective agents. The study suggests that surface disinfection could help prevent infection, especially in high-risk areas.
Researchers at UNC Health Care have discovered a little-known protein, PDGFA-associated protein 1 (PDAP1), that plays a crucial role in the replication and infection of hepatitis A virus. The protein is used by the virus to exploit the host cell's stress response, allowing it to produce its own proteins necessary for replication.
Research analyzing European survey data from 113,884 men who have sex with men reveals that only 44% report being vaccinated against both hepatitis A and B. Strong public health support and creating an open environment are crucial to reduce outbreaks among MSM and eliminate hepatitis B.
The research aims to develop a new method for detecting foodborne viruses like norovirus and hepatitis A in time to prevent or quickly respond to an outbreak. The technology uses magnetic liquids to concentrate viruses from large food samples into smaller volumes, streamlining the detection process.
Researchers at UNC School of Medicine discovered a protein complex that allows hepatitis A virus to replicate. They found that the oral compound RG7834 stops viral replication in an animal model, providing proof-of-principle for antiviral therapy.
Researchers have identified a promising compound, golvatinib, that inhibits hepatitis A virus infection. The discovery was made possible by combining high-resolution cryogenic electron microscopy and molecular modeling to understand the structural basis of neutralization.
Researchers at UNC and TMIMS discovered that IRF1 protein regulates RARRES3 enzyme, making liver cells hostile to hepatitis A infection. The study provides implications for cellular responses to other RNA viruses like dengue and Zika.
Researchers from University of Barcelona analyzed Hepatitis A virus variants that can escape the effects of the vaccine. They recommend giving two doses and additional booster shots to prevent the emergence of these variants.
Researchers found compounded pain creams ineffective in relieving localized pain, with small benefits attributed to peripheral nervous system drugs. The treatment's lack of efficacy and high cost make it less suitable than FDA-approved compounds.
A study found that the Italian outbreak is predominantly caused by strains linked to recent European outbreaks, highlighting the risk of acute HAV infection via sexual transmission in high-risk groups like MSM. The study also emphasizes the importance of hepatitis A vaccine coverage and awareness campaigns for prevention.
Alaska's comprehensive hepatitis A vaccination program, established in the 1990s, has dramatically reduced the virus's presence among native peoples. The program's success is attributed to widespread vaccination requirements for school entry, resulting in an 88% decline in imported cases since 2008.
A follow-up study found most vaccinated children maintained anti-hepatitis A antibodies until age 15-16 years, suggesting protection for at least 30 years. The findings support current US vaccine recommendations and do not require booster doses.
A large-scale study reveals the hepatitis A virus is likely of animal origin, with viruses from small mammals showing similarities to the human virus. The discovery offers new perspectives for risk assessments and may hint at a distant ancestry in primordial insect viruses.
Researchers have found a link between the origins of hepatitis A virus (HAV) and small mammals, specifically bats and rodents. The study provides novel insight into the evolution of HAV and how it spread to humans, highlighting the importance of analyzing animal reservoirs for risk assessment of emerging viruses.
A recent study found that over half of eligible Americans visiting a travel clinic did not receive the recommended measles vaccine, putting them at risk for infection. Vaccination is also essential for preventing hepatitis A outbreaks in areas with inadequate sanitation, such as Mexico's Tulum resort destination.
Researchers identified a new virus, phopivirus, in seals genetically similar to hepatitis A, suggesting it may have originated in animals. The discovery provides clues on the emergence of hepatitis A and highlights the importance of studying wildlife reservoirs of zoonotic viruses.
Scientists have discovered a new virus in seals that is closely related to human hepatitis A virus, raising concerns about the emergence of hepatitis A. The researchers found the virus in harbor seals off the coast of New England and suggest it may be present in other wildlife species.
The rate of hospitalization due to hepatitis A virus infection has declined significantly in the US, with a decrease from 0.72 to 0.29 per 100,000 cases between 2002 and 2011. Vaccination of adults with chronic liver disease may help prevent HAV infection and hospitalization.
Researchers at the University of North Carolina discovered that hepatitis A virus acquires an envelope from infected cells when found in the environment, blurring the distinction between enveloped and non-enveloped viruses. This unique behavior allows the virus to evade host immune systems and survive longer periods between hosts.
A new study found that hepatitis A vaccination in children under 2 years old is highly effective, with most retaining protection for at least 10 years. The vaccine's effectiveness was not affected by the transfer of mothers' antibodies to their child, contradicting previous concerns.
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.
A new study found that acute Hepatitis A virus is more efficient at evading the host's interferon response, allowing it to linger in the body for almost a year. This discovery undermines current theories on chronic Hepatitis C development and highlights the need for further research into Hepatitis-host interactions.
Researchers have discovered a new cellular mechanism underlying hydronephrosis, a common congenital defect in the kidney. They found that the Hedgehog signaling pathway controls the development of cells required for urine flow, and genetic mutations can impair this process. The study also suggests potential therapeutic targets and gene...
A recent study published in World Journal of Gastroenterology found a significant increase in hepatitis A cases among Korean adults, with higher rates among older patients and males. The study also revealed an abrupt rise in seroprevalence after age 30 and increased liver enzyme levels with age.
Hepatitis A and C viruses attack the same protein, MAVS, to block immune defenses, allowing them to survive in the liver. This discovery provides a new perspective on the chronicity of hepatitis C, a highly relevant virus clinically.
A new Israeli study found that vaccinating all children against hepatitis A at 18 and 24 months reduced overall incidence of the disease for all ages by 95%. The study also showed a significant decrease in reported incidents among one- to four-year-olds, a demographic historically susceptible to infection.
Researchers used molecular epidemiologic methods to identify the relationships between four separate foodborne hepatitis A virus outbreaks in Tennessee, North Carolina, Georgia, and Pennsylvania. The methods helped public health officials respond quickly to outbreaks and provided reassurance that a larger outbreak was not occurring.
The incidence of hepatitis A in the US has dropped substantially since 1990, with a 76% decline to 2.6 per 100,000 people. Children under 18 years old have been disproportionately affected, with a 87% decrease in cases.
A study by Virginia Tech researchers found that high hydrostatic pressure can effectively inactivate the Hepatitis A virus in oysters, reducing the risk of foodborne illness. This breakthrough has significant implications for oyster processing and distribution, as well as consumer safety.
A study by Marshfield Clinic and USGS revealed that untreated city water in La Crosse contains various types of gastrointestinal viruses, including enteroviruses, rotavirus, hepatitis A virus, and norovirus. The presence of these viruses poses a risk to the drinking water supply, particularly in shallow sand and gravel aquifers.
Hepatitis A vaccine boosters are unnecessary for healthy individuals, according to a meeting of experts; protective antibody amounts persist beyond 10 years after primary vaccination. Further investigations are needed for special patient groups.
Researchers have pinpointed the cause of hepatitis A virulence by identifying two key genes, 2C and VP1/2A. The discovery may lead to the development of a live, attenuated HAV vaccine that could be more effective and affordable for widespread use.
A team of researchers at Stanford Medicine has discovered a new gene family, the Tim family, that plays a crucial role in asthma development. The link between this gene family and the hepatitis A virus may help explain why asthma rates have increased where hepatitis A infection rates have dropped.
Vancouver is facing a high risk of an hepatitis A outbreak due to past infections among street youth, injection drug users, and men who have sex with men. The Canadian Medical Association Journal report highlights the need for vaccination programs to protect these groups.