Influenza Surveillance Data 2009- 2010

Types of Epidemiology Studies

Epidemiology is the study of the distribution of health problems and their determinants in human populations. In this context, one of its aims is to study the impact of behavioral, occupational and environmental factors on health. An epidemiological study aims to analyze the factors which influence the frequency or distribution of diseases and other health phenomena in the populations exposed to these factors. Its objective is to attempt to establish an association between exposure to certain substances and the occurrence of disease. There are two main types of epidemiology studies, experimental and non-experimental. The non-experimental studies …

Current Influenza Surveillance Data

Statewide Temporal Trend of Influenza-Like Illness by MMWR Week
(2007-08, 2008-09,2009-10, 2010-11 Seasons)

The figure below displays the number of influenza-like illness (ILI) cases reported during the 2007-08, 2008-09, 2009-2010 and 2010-2011 influenza seasons.  ILI is defined as fever 100˚ F AND cough and/ or sore throat without another identified cause.  ILI can be caused by a variety of respiratory viruses, so data should always be interpreted in the context of laboratory data.  ILI cases are reported by physicians to local health departments.  Local health departments report the data weekly to the state. The Centers for Disease Control and …