"Molecular Epidemiology of Scrub Typhus" is a comprehensive book written by S. Seethalakshmi that explores the molecular characterization and epidemiology of Orientia tsutsugamushi, the causative agent of scrub typhus, in patients from Chennai and its neighboring districts. The book provides an in-depth analysis of the various strains of O. tsutsugamushi and their genetic diversity, which is crucial in understanding the evolution and transmission of the disease. The author delves into the various molecular techniques used for identifying and characterizing the strains of O. tsutsugamushi, including PCR-based assays, nucleotide sequencing, and phylogenetic analysis. The book also highlights the importance of identifying the genetic variations in O. tsutsugamushi to predict the emergence of new strains and potential outbreaks in the future. In addition to molecular characterization, the book also examines the epidemiology of scrub typhus in the Chennai region and neighboring districts. It provides insights into the risk factors for the disease and the factors that contribute to its spread, such as environmental changes and population movements. Overall, "Molecular Epidemiology of Scrub Typhus" is a valuable resource for epidemiologists, microbiologists, and other healthcare professionals interested in understanding the molecular and epidemiological aspects of scrub typhus. It presents a comprehensive overview of the disease and its causative agent, and offers insights into the strategies that can be employed to control its spread.