Alex Christian Yde Nielsen

Alex Christian Yde Nielsen serves as a Clinical Associate Professor in the Department of Clinical Medicine at the University of Copenhagen's Faculty of Health and Medical Sciences. Based at Blegdamsvej 3 in Copenhagen, his research spans multiple clinical domains with a focus on infectious diseases and neurological conditions affecting pediatric populations.

His research interests prominently feature Infectious Diseases with specialization in pediatric respiratory infections, neuroborreliosis, and meningitis. Additional expertise includes Pediatric Neurology with investigations into facial palsy and long-term neurological outcomes following infections, as well as Transplant Infectious Diseases focusing on viral complications in immunocompromised patients. His work frequently employs epidemiological approaches to study disease patterns and outcomes across Danish and international populations.

Nielsen's publication record demonstrates consistent research productivity through 2025, with recent work examining microbiological etiologies of pediatric respiratory infections in Kyrgyzstan, outcomes of pneumococcal meningitis, and psychiatric sequelae following childhood infections. His research often involves large-scale population-based cohort studies leveraging Denmark's comprehensive national health registries.

Nielsen actively collaborates with multiple research groups across Denmark, particularly with colleagues at the Department of Clinical Medicine and affiliated hospital departments. His work appears in high-impact journals including Clinical Microbiology and Infection, Journal of Child Psychology & Psychiatry, and BMC Infectious Diseases.