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Recommendations for collection of laboratory specimens associated with outbreaks of gastroenteritis
Abstract:
Recent discoveries have implicated a number of "new" (i.e., previously unrecognized) infectious agents as important causes of outbreaks of gastroenteritis. Unfortunately, the ability to detect these agents in an outbreak can be limited by two factors: 1) the lack of appropriate assays-many of which are still in developmental stages and are not readily available to clinical laboratories, and 2) inadequately or improperly collected specimens. At CDC, many newly developed assays are being used for research and for outbreak investigations. The information in this report is especially intended for public health agencies that collaborate with CDC in investigating outbreaks of gastroenteritis. The report provides an update on guidelines and recommendations for the proper collection of specimens to be sent to CDC, gives general background information concerning some recently discovered pathogens, lists some of the tests available at CDC, and provides a list of CDC contacts. The guidelines and the general information provided on causes of outbreaks of gastroenteritis can be also used by public health workers for investigations when specific testing is available and appropriate.
Insights
Detecting new infectious agents causing gastroenteritis outbreaks is challenging due to limited assays and improper specimen collection. This report offers guidelines for public health agencies to improve outbreak investigations and specimen handling for the Centers for Disease Control and Prevention (CDC).
Area of Science:
- Infectious Diseases
- Public Health
- Clinical Microbiology
Background:
- Emerging infectious agents are increasingly recognized as significant causes of gastroenteritis outbreaks.
- Detection of these novel pathogens is often hindered by the unavailability of validated diagnostic assays and suboptimal specimen collection practices.
- The Centers for Disease Control and Prevention (CDC) utilizes newly developed assays for research and outbreak investigations.
Purpose of the Study:
- To provide public health agencies with updated guidelines for proper specimen collection during gastroenteritis outbreaks.
- To offer background information on recently identified gastroenteritis pathogens.
- To inform about available diagnostic tests at the CDC and provide relevant contact information.
Main Methods:
- Review and synthesis of current knowledge on emerging gastroenteritis pathogens.
- Development and dissemination of evidence-based guidelines for specimen collection and handling.
- Compilation of information on diagnostic capabilities at the CDC.
Main Results:
- The report details challenges in detecting new infectious agents responsible for gastroenteritis.
- Recommendations are provided for specimen collection to enhance diagnostic accuracy.
- Information on specific tests available at the CDC for outbreak investigations is included.
Conclusions:
- Proper specimen collection is critical for the accurate identification of infectious agents causing gastroenteritis outbreaks.
- The guidelines presented aim to improve collaboration between public health agencies and the CDC.
- This resource supports public health workers in investigating outbreaks, even when specific testing is not yet widely available.