This book discusses all possible aspects of infectious perinatal pathology caused by different bacterial, viral, fungal, mycoplasma and protozoan pathogens. Brief and concise microbiological, epidemiological and clinical data, and all macro- and histopathological changes are illustrated. Issues related to perinatal pathology are compared with those in children and adults. Special attention is paid to viral, mycoplasma and chlamydia infections. Chlamydia and Mycoplasma lesions are practically unknown to pathologists dealing with human specimens. Several typical and rare examples from the authors’ practice are presented as well. The book is important for pathologists and clinicians (obstetricians, neonatologists, paediatricians). © The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.