Epidemiology of Infectious Diseases

Depending on intensity and extent occurrence of infectious diseases can be distinguished accordingly: Sporadic – isolated cases of disease without obvious epidemiological connections Epidemical – mass occurrence of infectious disease in mutual epidemiological connection taking place in a limited territory for a certain amount of time. When two or more cases of disease occur in one family or household we speak about family occurrence. Pandemic – mass occurrence of infectious disease affecting the whole continent i.e. without territorial limits Endemic – occurrence of the disease which is bound to a certain territory without time limitation i.e. tick encephalitis, tularaemia or where transmitter (vector) is bound to certain climatic conditions (yellow fever, malaria).