Transmission dynamics is a field of research that focuses on the study of how infectious diseases spread within populations. This includes understanding the factors that influence the transmission of diseases, such as the interactions between hosts and pathogens, environmental conditions, host immunity, and the effectiveness of control measures. Researchers in this area use mathematical models, epidemiological data, and experimental studies to investigate patterns of disease transmission and to develop strategies for disease control and prevention. Understanding transmission dynamics is crucial for predicting disease outbreaks, designing effective interventions, and ultimately reducing the burden of infectious diseases on human and animal populations.