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Several cases of paediatric acute hepatitis of an unknown aetiology have been described in these last few months and in several countries worldwide. We present two patients, a 7-month-old girl and an 8-year-old boy, with gastrointestinal symptoms and lethargy, associated with elevation of transaminase levels. Serologies for hepatitis A-E virus and PCR test to SARS-CoV-2 were all negative. In the first case, an adenovirus serotype C could be isolated in a respiratory sample as well as cytomegalovirus (CMV) in the blood (100 copies/mL). In both children, there was a progressive decrease in the hepatic markers and symptomatic resolution, compatible with a good prognosis, also seen globally in most cases. To date, infection remains the most plausible cause to consider, especially when it is presumed to be linked to adenovirus. Other potential agents and causes are still being evaluated, thus emphasizing the importance of continuous epidemiological surveillance, notification, and detailed study of all hepatitis cases.
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http://dx.doi.org/10.20344/amp.18690 | DOI Listing |
Rev Med Suisse
August 2025
Service de gastroentérologie et d'hépatologie, Département de médecine, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne.
Viral hepatitis is associated with high morbidity and mortality worldwide. Hepatitis A and E viruses are enterally transmitted and typically cause acute self-limited hepatitis. Hepatitis B, C, and D viruses are parenterally transmitted and can cause chronic hepatitis, with potential progression to cirrhosis and hepatocellular carcinoma.
View Article and Find Full Text PDFJ Immunol
September 2025
Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), Shanghai Institute of Infectious Disease and Biosecurity, Qidong-Fudan Innovative Institution of Medical Sciences, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China.
Hepatitis B virus (HBV) exclusively infects hepatocytes and produces large quantities of subviral particles containing its surface antigen (HBsAg). T cells play a central role in controlling HBV infection but can also mediate liver injury and contribute to disease progression. However, the mechanisms that regulate T-cell responses to eliminate the virus without causing immunopathology during acute HBV infection remain poorly defined.
View Article and Find Full Text PDFmBio
September 2025
Fred Hutchinson Cancer Center, Vaccine and Infectious Disease Division, Seattle, Washington, USA.
Accurate timing estimates of when participants acquire HIV in HIV prevention trials are necessary for determining antibody levels at acquisition. The Antibody-Mediated Prevention (AMP) Studies showed that a passively administered broadly neutralizing antibody can prevent the acquisition of HIV from a neutralization-sensitive virus. We developed a pipeline for estimating the date of detectable HIV acquisition (DDA) in AMP Study participants using diagnostic and viral sequence data.
View Article and Find Full Text PDFMedicine (Baltimore)
September 2025
Nutrition Department, Hangzhou Third People's Hospital, Hangzhou, Zhejiang, China.
Rationale: Extracorporeal membrane oxygenation (ECMO) is a life-support technology for refractory cardiac arrest, but the massive blood transfusions required during treatment significantly increase the risk of transfusion-related infections. Hepatitis E virus (HEV) - traditionally linked to fecal-oral transmission - is increasingly recognized as a transfusion-transmitted pathogen, especially in emergency settings where urgent blood product infusion is common and routine HEV screening in blood banks is often lacking. However, nursing strategies for managing acute HEV infection after ECMO remain poorly defined, highlighting the need to address this clinical gap.
View Article and Find Full Text PDFJ Virol
September 2025
Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal, India.
High morbidity and mortality associated with human β-coronavirus (CoV) infection highlight the need to determine host responses to infection and develop anti-viral therapies. Gap junction intercellular communication (GJIC), particularly involving Connexin43 (Cx43), is vital for maintaining central nervous system (CNS) homeostasis, and disruption of GJIC is a well-documented pathogenic mechanism among β-coronaviruses. Specifically, murine β-coronavirus, mouse hepatitis virus (MHV-A59) inoculation in the mouse brain causes acute-stage CNS viral spread and chronic neuroinflammatory demyelination while causing pronounced downregulation of Cx43 at the acute stage, reflecting a critical role in CNS pathology.
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