Epidemiology is the occurrence of communicable and chronic diseases, principally in the form of epidemics which is caused by microbial infection. Infection is the invasion of foreign microbial organism on our immune system for its survival and growth.
Infections are caused by infectious microrganisms including viruses, viroids, prions, bacteria, parasitic roundworms and pinworms, ticks, mites, fleas, and lice, ringworm, and other macroparasites such as tapeworms and other helminths. According to epidemiologic studies by WHO the top three single agent/disease killers are HIV/AIDS, TB and malaria.
While the number of deaths due to nearly every disease have decreased, deaths due to HIV/AIDS have increased fourfold. Childhood diseases include pertussis, poliomyelitis, diphtheria, measles and tetanus. Children also make up a large percentage of lower respiratory and diarrheal deaths.
Related Journals of Epidemiology and Infection
Epidemiology and Infection, Hospital Infection Control, Journal of Infection and Public Health, Journal of Infection and Chemotherapy