he science that deals with when diseases occur and how they are transmitted is called the science that deals with when diseases occur and how they are transmitted is called communicable disease. public health. morbidity and mortality. ecology. epidemiology.

The science that deals with when diseases occur and how they are transmitted is called EpidemiologyWhat is Epidemiology ?Epidemiology is the study of the causes, manifestations, and distribution of illness and health in a given population. When organisms reproduce in host tissue, it is called an infection and it can lead to illness.Descriptive, analytical, and experimental methods are the three main types of epidemiologic research. Descriptive epidemiology is the approach most frequently utilised, even though all three can be used to investigate the prevalence of disease.The study of epidemiology focuses on the frequency and distribution of health events in a population. Frequency includes both the quantity of health events, such as the number of cases of diabetes or meningitis in a population, and the proportion of those cases to the size of the population.Learn more about Epidemiology here:https://brainly.com/question/12475020#SPJ4