  Hospital acquired infections are a serious threat to the health and
well-being of patients and medical staff within clinical units. Many of these
infections arise as a consequence of medical personnel that come into contact
with contaminated persons, surfaces or equipment and then with patients,
without following proper hygiene procedures. In this paper we present our
ongoing efforts in the development of a wireless sensor network based
cyber-physical system which aims to prevent hospital infections by increasing
compliance to established hygiene guidelines. The solution, currently developed
under European Union funding integrates a network of sensors for monitoring
clinical workflows and ambient conditions, a workflow engine that executes
encoded workflow instances and monitoring software that provides real-time
information in case of infection risk detection. As a motivating example, we
employ the workflow in the general practitioner's office in order to
comprehensively present types of sensors and their positioning in the monitored
location. Using the information collected by deployed sensors, the system is
capable of immediately detecting infection risks and taking action to prevent
the spread of infections.
