outbreak The sudden emergence of disease in a population of people or animals. (sciencenewsforstudents.org)
«Richer, more diverse ecosystems are better able to cope with disturbances — such as extreme events and the emergence of diseases. (sciencedaily.com)
It appears to be certain that, in addition to environmental factors, genetic mutations also play a role in the emergence of the disease. (sciencedaily.com)