Tarbiat Modares University Infection Epidemiology and Microbiology 2588-4107 12 2 2026 09 01 Surveillance of Infectious Agents in Acute Febrile Illnesses in a Tertiary Care Hospital in Northern India 153 160 29041 10.52547/iem.12.2.153 EN Priyanka Khanna Chetal Department of Microbiology, Punjab Institute of Medical Sciences, Jalandhar, Punjab, India 0009-0002-1327-760X Ashu Gupta Department of Microbiology Punjab Institute of Medical Sciences, Jalandhar, Punjab, India Sheevani Sheemar Department of Microbiology Punjab Institute of Medical Sciences, Jalandhar, Punjab, India Tushar Taperyal Department of Microbiology Punjab Institute of Medical Sciences, Jalandhar, Punjab, India Savi Taak Department of Microbiology Punjab Institute of Medical Sciences, Jalandhar, Punjab, India Journal Article 2026 02 24 Background: Acute febrile illnesses (AFIs) are a major cause of morbidity in India, particularly during the monsoon season, posing significant diagnostic challenges due to overlapping clinical features. This study aimed to investigate the main AFI causes in northern India. Materials & Methods:This prospective observational study was conducted at a tertiary care hospital in northern India from July 2023 to December 2024 to determine the aetiological spectrum of AFIs. A total of 8127 patients were evaluated using rapid diagnostic tests and standard microbiological methods for dengue, typhoid, hepatitis A and E, chikungunya, scrub typhus, and malaria. Findings: Dengue and typhoid were the most frequently identified AFI causes, followed by viral hepatitis and other vector-borne infections. Mixed infections were also observed, highlighting diagnostic complexity. Conclusion: The findings emphasize the importance of laboratorysupported surveillance to enable early outbreak detection, improve case management, and guide public health interventions in endemic regions.

https://iem.modares.ac.ir/article_29041_6aaf618580961e7d7d50f1a6aa246fa1.pdf