Overview

Seasonality refers to the cyclic appearance of events over a period of time. A seasonal pattern may appear as a tight cluster of isolated outbreaks that occurred during a relatively short time period, then spreading over a wide geographic area. For example, in a temporal curve of enteric infection cases a compact cluster of outbreaks is followed by a long interval of low incidence. Systematic recurrence of such sequences forms a seasonal pattern typical of a specific pathogen in a given population and in a given locality. A seasonal increase in enteric or respiratory infection often produces a well-defined oscillating curve that starts to rise in one season and declines over the next one. In some diseases, like salmonellosis and influenza, annual oscillations explain up to 60% of variability.

Abstract Links

Climate and Water Type as Indicators for Gastroenteric Infections
J.S. Jagai, A.A. Kosheleva, D.A. Castronovo, K.C. Chui, E.N. Naumova

Spatio-temporal patterns for pneumonia and influenza hospitalization
A.A.Kosheleva, D.A. Castronovo, J.S. Jagai K.C. Chui, Y.N. Naumov, J. Gorski, E.N. Naumova

Environmental Indicators for Clostridium Difficile
J.S. Jagai, A.A Kosheleva, D.A. Castronovo, E.N. Naumova

Association of influenza seasonality with temperature related indicators
E.Lofgren, N. Fefferman, G.Sedmak, J.Gorski, E.N.Naumova