Abstract
Background Electronic health data may improve the timeliness and accuracy of resource-intense contact investigations (CIs) in healthcare settings.
Methods In September 2013, we initiated a CI around a healthcare worker (HCW) with infectious tuberculosis (TB) who worked in a maternity ward. Two sources of electronic health data were employed: hospital-based electronic medical records (EMRs), to identify patients exposed to the HCW, and an electronic immunization registry, to obtain contact information for exposed infants and their providers at two points during follow-up.
Results Among 954 patients cared for in the maternity ward during the HCW’s infectious period, the review of EMRs identified 285 patients (30%) who interacted with the HCW and were, thus, exposed to TB. Matching infants to the immunization registry offered new provider information for 52% and 30% of the infants in the first and second matches. Providers reported evaluation results for the majority of patients (66%).
Conclusion Data matching improved the efficiency and yield of this CI, thereby demonstrating the usefulness of enhancing CIs with electronic health data.
Estimating vaccination-coverage of 7years-old children - data analysis of electronic data systems
