id author title date pages extension mime words sentences flesch summary cache txt cord-267485-1fu1blu0 Lazarus, Ross Distributed data processing for public health surveillance 2006-09-19 .txt text/plain 4773 182 39 All PHI in this system is initially processed within the secured infrastructure of the health care provider that collects and holds the data, using uniform software distributed and supported by the NDP. In the more traditional type of system, individual patient records, often containing potentially identifiable information, such as date of birth and exact or approximate home address, are transferred, usually in electronic form, preferably through some secured method, to a central secured repository, where statistical tools can be used to develop and refine surveillance procedures. These standard line lists are used most often to support requests by public health agencies for additional information about the individual cases that contribute to clusters identified in the aggregate data. In our experience, such requests involve only a tiny fraction of the data that would be transferred in a centralized surveillance model, providing adequate support for public health with minimal risk of inadvertent disclosure of identifiable PHI. ./cache/cord-267485-1fu1blu0.txt ./txt/cord-267485-1fu1blu0.txt