  We develop open source infection risk calculators for patients and healthcare
professionals as apps for hospital acquired infections (during child-delivery)
and sexually transmitted infections (like HIV). Advanced versions of ehealth in
non-communicable diseases do not apply to epidemiology much. There is, however,
no infection risk calculator in the Polish Internet so far, despite the
existence of data that may be applied to create such a tool.
  The algorithms involve data from Information Systems (like HIS in hospitals)
and surveys by applying mathematical modelling, Bayesian inference, logistic
regressions, covariance analysis and social network analysis. Finally, user may
fill or import data from Information System to obtain risk assessment and test
different settings to learn overall risk.
  The most promising risk calculator is developed for Healthcare-associated
infections in modes for patient hospital sanitary inspection. The most extended
version for hospital epidemiologists may include many layers of hospital
interactions by agent-based modeling. Simplified version of calculator is
dedicated to patients that require personalized hospitalization history of
pregnancy described by questions represented by quantitative and qualitative
variables. Patients receive risk assessment from interactive web application
with additional description about modifiable risk factors.
  We also provide solution for sexually transmitted infections like HIV. The
results of calculations with meaningful description and percentage chances are
presented in real-time to interested users. Finally, user fills the form to
obtain risk assessment for given settings.
