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Sunday, March 21, 2010
Grand Hall (Hyatt Regency Atlanta)
Background: Intra-hospital dissemination of pathogenic bacteria and opportunistic pathogens, including highly drug resistant strains, remains a threat despite current infection control practices. Improved surveillance methods could help prevent nosocomial outbreaks caused by these bacteria. We have developed a web-based system generating 2-D (time-place) carrier maps color-coded by antibiogram groups that automatically produces a concise snapshot of bacterial isolates within the hospital. The web-based system has been designed to be used as a part of a nationwide automated bacterial surveillance system (JCLS: Japanese Nosocomial Infections Surveillance System (JANIS) Clinical Laboratory Subdivision) that involves approximately 600 hospitals (20% of all hospitals with >200 beds ) nationwide.
Objective: Provide a handy tool to find, analyze and evaluate intra-hospital dissemination of bacteria, open to the participants of the national surveillance system.
Methods: A two-dimensional antibiogram-based, color-coded carrier mapping system (2DCM) has been adapted for a web-based application using “ClickOnce®” technology. Participants can use the system online using Internet Explorer® after logging into the system with an ID and password. The program is downloaded through the Web and temporarily installed onto the local computer and is automatically un-installed from the computer when the user quits the program. Data feeds, which are based on the submitted data from individual participants, are also delivered through the Web.
Results: Although the level of response of the program depends on the performance of the local computers, the system worked on a practical level when we tested the system with conventional (ex. 1GHz CPU clock, 512MB main memory) desktop and laptop computers. Program download and installation required just a click on a button and took less than a few seconds. It took up to ten seconds for data feeds. The typical data processing time was between two and ten seconds. The system, with its user-friendly interface, provided 2-D graphical feedback color-coded by antibiogram groups as a concise view of bacterial carriage, and enabled distinction between intra-hospital dissemination and strains acquired prior to hospital admission.
Conclusions: 2DCM-web is a useful tool available to the surveillance participants that gives a unique visualization of bacterial carriage within hospitals and provides the capability to identify unreported intra-hospital bacterial disseminations. We are currently providing the web-based service to the research participants, and will make the service available to the JCLS system consisting of 600 participants nationwide within two years.
Objective: Provide a handy tool to find, analyze and evaluate intra-hospital dissemination of bacteria, open to the participants of the national surveillance system.
Methods: A two-dimensional antibiogram-based, color-coded carrier mapping system (2DCM) has been adapted for a web-based application using “ClickOnce®” technology. Participants can use the system online using Internet Explorer® after logging into the system with an ID and password. The program is downloaded through the Web and temporarily installed onto the local computer and is automatically un-installed from the computer when the user quits the program. Data feeds, which are based on the submitted data from individual participants, are also delivered through the Web.
Results: Although the level of response of the program depends on the performance of the local computers, the system worked on a practical level when we tested the system with conventional (ex. 1GHz CPU clock, 512MB main memory) desktop and laptop computers. Program download and installation required just a click on a button and took less than a few seconds. It took up to ten seconds for data feeds. The typical data processing time was between two and ten seconds. The system, with its user-friendly interface, provided 2-D graphical feedback color-coded by antibiogram groups as a concise view of bacterial carriage, and enabled distinction between intra-hospital dissemination and strains acquired prior to hospital admission.
Conclusions: 2DCM-web is a useful tool available to the surveillance participants that gives a unique visualization of bacterial carriage within hospitals and provides the capability to identify unreported intra-hospital bacterial disseminations. We are currently providing the web-based service to the research participants, and will make the service available to the JCLS system consisting of 600 participants nationwide within two years.