Many infectious diseases break seasonally, like flu.
This is the conclusion of an investigator from the Columbia University of New York in the PLOS Pathogens magazine. In his study, he presents evidence of seasonal dynamics in 69 infectious diseases, including sleep illness, zika, cheese, polio and hepatitis B. The author identifies four possible main factors: climatic influences , which also affects mosquito density, for example. Social rhythms such as school periods and holidays. Ecological factors such as algae growth, which in turn can take advantage of bacteria. And biological rhythms – for example, hormone fluctuations that affect the immune system.
For its study, the scientist relies on data from WHO, Control Centers and Disease Prevention of the United States and studies already published. With that, she made a calendar showing the seasonal pattern of the cases.