Rosario, Argentina – A team of researchers at the National Scientific and Technical Research Council (CONICET) in Argentina is making significant strides in the development of a portable, digital diagnostic tool for Hepatitis E. This innovative device, combining cutting-edge technology like graphene sensors, nanoantibodies, and artificial intelligence, promises to improve the speed and accuracy of diagnosis, particularly in areas with limited access to traditional healthcare infrastructure.
Hepatitis E, a liver infection primarily transmitted through contaminated water, is often underdiagnosed, especially in regions like Argentina where it’s an emerging public health concern. The novel diagnostic kit aims to address this gap by providing a rapid and accessible testing method. According to recent data, Hepatitis E can turn into chronic, lasting six months or longer, in certain patient populations. The development of this tool is particularly timely given the increasing recognition of Hepatitis E as a zoonotic disease – meaning it can be transmitted from animals to humans – and the need for improved surveillance.
The project is spearheaded by the ViroSensAr network, a platform established just over two years ago to develop rapid and portable biosensors for detecting viral infections. The research, published in December 2025 in the scientific journal ACS Sensors, details the creation of this digital diagnostic kit. Omar Azzaroni, a CONICET researcher at the Theoretical and Applied Physical-Chemical Research Institute (INIFTA, CONICET-UNLP) and coordinator of ViroSensAr, explained that the network’s focus on “undetended and important health diseases” led to the prioritization of Hepatitis E.
The Technology Behind the Innovation
The diagnostic device utilizes a chip sensor made of graphene, a single-layer carbon material known for its exceptional conductivity and sensitivity. This sensor is coupled with nanoantibodies, which are engineered to specifically bind to the Hepatitis E virus. The integration of artificial intelligence enhances the precision of the diagnostic process, allowing for accurate detection even in complex samples. The device is designed to be portable, making it suitable for use in remote areas or resource-constrained healthcare settings.
The ViroSensAr network comprises three key institutions: INIFTA, the Institute of Physical Chemistry of Materials, Environment and Energy (INQUIMAE, CONICET-UBA), and the Higher Institute of Biological Research (INSIBIO, CONICET-UNT). The project also benefits from the collaboration with Gisens Biotech, a startup company specializing in bioelectronics and nanotechnology, with locations in La Plata, Argentina, and the United States.
Increased Prevalence in Vulnerable Populations
Recent studies highlight the growing concern surrounding Hepatitis E, particularly among immunocompromised individuals. A pilot study conducted between 2018 and 2020 at a pediatric referral center in Rosario, Argentina, revealed a significantly higher seroprevalence of Hepatitis E antibodies in immunosuppressed children – 6.9% (4/58) – compared to healthy controls (0/101; p = 0.0075), as reported in PubMed. While no active infections were detected in the study, the findings underscore the need for targeted surveillance in high-risk pediatric groups.
The study also noted that the prevalence of antibodies was highest among adolescents (10.0%) and patients with autoimmune diseases (28.6%), although these subgroup comparisons were not statistically significant. Researchers suggest that further investigation is warranted to understand the specific risk factors and clinical outcomes associated with Hepatitis E infection in these vulnerable populations.
Looking Ahead
The development of this portable diagnostic tool represents a significant step forward in the fight against Hepatitis E in Argentina and potentially beyond. Researchers are now focused on evaluating the device’s efficacy and refining its performance for widespread implementation. The ability to quickly and accurately diagnose Hepatitis E will be crucial for improving patient care, monitoring the spread of the virus, and evaluating the effectiveness of treatments for prolonged infections. The CONICET continues to prioritize scientific advancements that address critical public health challenges.
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Disclaimer: This article provides informational content about medical research and is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare provider for any questions you may have regarding a medical condition.
