Biology Reference
In-Depth Information
10.3.1 System Technical architecture
The CISDCP system was developed using Java 2 Platform Enterprise
Edition (J2EE) Web technology with a component model and relational
database. This adoption allowed the system to receive and process infor-
mation from various medical institutions via the Internet, virtual private
networks, and ADSL connections. It also was possible for the system to
be connected to other systems using standard data interface technology.
This system also served as an information network platform for trans-
mitting and accessing data through Web-service data exchange tech-
nologies. Disease surveillance and management processes, along with
reporting and response protocols for public health emergency events,
were customized according to workflow of the Chinese CDC. The sys-
tem architecture is illustrated in Figure 10.6.
CISDCP also has built in a Web-based geographic information system
(GIS) for the visualization of spatial information for epidemics and plot-
ting of case clusters. An example of GIS drill-down maps that supported
early warnings for an infectious disease outbreak in 2006 can be seen in
Figure 10.7.
10.3.2 System Coverage and utilization
The China Information System for Disease Control and Prevention sup-
ports all health administrative bureaus and CDCs across 31 provinces, 375
cities/prefectures, and 3,104 counties/districts. Users from about 18,700 hos-
pitals (about 94% of the total of hospitals at the county level or above) and
41,000 township health centers (75%) access the system on daily basis. More
DDN/ADSL
VPN/Internet
Data
Bank
DDN/ADSL
Central
PSTN
ISDN/PSTN
PSTN
Provincial
Level
Prefecture
Level
Hospital
County/District
Level
Figure 10.6
System architecture of China's Infectious Disease Surveillance System.
