This book presents the results of long-term investigations carried out by the authors and their collaborators on rare and complex problems in infectious pathology. It covers both paediatric and adult clinical cases, as well as detailed autopsy findings, providing a broad spectrum of insights across different age groups. In addition, it integrates experimental research with carefully documented clinical observations, thereby linking laboratory data with real-world medical practice.

A significant emphasis is placed on rare infections that remain poorly understood or insufficiently represented in standard medical literature. The work also reviews the latest scientific publications, highlighting controversies, unresolved questions, and emerging trends in the field. By combining clinical, pathological, and experimental perspectives, the book aims to deepen the understanding of infectious diseases and contribute to improved diagnostic accuracy and treatment strategies.

Prof. Vsevolod A. Zinserling (Tsinzerling) graduated from Leningrad Paediatric Medical Institute in 1977, worked as research scientist, practicing as pathologist in Leningrad Research Institute of Children’s Infections (1977-1988). In 1978-80 had postgraduate training at the chair of pathology (chief. Prof. O.K. Khmelnitsky) of Leningrad Institute for Postgraduate Medical Training. Since 2017 V. Zinserling is organizing and providing the postgraduate medical training in pediatric pathology in Russia. He is also providing consultations in the city’s Consulting Centre for the Infectious Pathology and. 

Yulia R. Zyuzya graduated from the Perm State Medical Academy, where she subsequently worked at the Department of Pathological Anatomy. In 2000, she defended her PhD dissertation on the topic of "Morphological Characteristics of Skin Lesions in Ixodes Tick-Borreliosis with Erythema migrans." She conducted research at the Departments of Pathomorphology at the Central Russian Research Institute of Tuberculosis and at the Federal Research Institutes of Morphology, Phthisiopulmonology, and Infectious Diseases in Moscow. 

Vadim E Karev graduated in 1995 from the St. Petersburg Pediatric Medical Academy. After completing his internship in 1996, he worked as pathologist at the S.P. Botkin Infectious Diseases Hospital in St. Petersburg. In 2004, he defended his dissertation for the degree of Candidate of Medical Sciences, "The Role of Chronic Viral Hepatitis in the Development of Hepatocellular Carcinoma," under the supervision of professor V.A. Zinserling. 

Dr Katharina Wassilew graduated from the Charite'- Humboldt University in Berlin/Germany (MD).  She trained in histopathology at well-known University hospitals in Israel, Bulgaria and Switzerland and subspecialised initially in soft tissue and bone pathology and further in cardiothoracic pathology in subspecialised departments in Italy (Rizzoli Institute) and in the UK (Royal National Orthopedic Hospital, Royal Brompton Hospital).