Streptococcal Disease, Invasive Group B

West Virginia Bureau for Public Health gives you an explanation for how to distinguish the Descriptive and Analytic Epidemiology.

Descriptive studies

The descriptive epidemiological study aims to describe the health status of a population by quantifying the importance of health problems. Its objective is to measure, in a population over a period, the frequency of a pathology, the number of new cases of this pathology or the number of deaths related to the pathology (it is called mortality).

Streptococcal Disease, Invasive Group B

Reporting Guidelines

  • Within 1 week to local health department


  • Streptococcus Group B Protocol

Current Case Definition

Healthcare Associated Infections

Analytical studies

The purpose of analytical studies is to investigate the excesses of certain diseases in certain populations and to analyze the role of factors likely to influence the incidence of these problems. They aim to compare exposed individuals, some of whom have the pathology they wish to study, for example a type of cancer, with others who are not. The researchers are looking for different epidemiology research topics in the community epidemiology which are also an important element of the integrated approach.

Healthcare associated infections cost thousands of lives and billions of dollars every year. The West Virginia Healthcare …

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 …


West Virginia Bureau for public health gives you reporting guidelines:

  • Influenza-like Illness:
    Within 1 week to local health department (Numerical totals only)
  • Influenza-associated pediatric mortality:
    (age <18 years): Within 1 week to local health department
  • Positive laboratory results for influenza:
    by type and subtype, as available (RT-PCR, immunoflourescence, or culture only) in aggregate weekly to IDE via fax (304)-558-8736
  • Outbreaks:
    Immediately to local health departments


  • West Virginia DIDE Protocol New
  •  Appendix 1: Avian influenza

Case Definition

  • Influenza-like illness is defined as fever ≥100°F(38°C) and cough or sore throat without another identified cause.
  • Influenza-Associated Pediatric Mortality
  • Novel influenza A virus