World Health Organization defines:
WHAT IS HEALTH TELEMATICS?
Health Telematics is a composite term for health-related activities, services
and systems, carried out over a distance by means of information and
communications technologies, for the purposes of global health promotion,
disease control, and health care, as well as education, management, and
research for health.
WHAT IS E-HEALTH?
E-health is the combined use in the health sector of electronic communication
and information technology (digital data transmitted, stored and
retrieved electronically) for clinical, education and administrative purposes,
both at the local site and at a distance.
WHAT IS TELEMEDICINE?
The delivery of health care services, where distance is a critical factor,
by health care professionals using information and communications
technologies for the exchange of valid information for diagnosis, treatment
and prevention of disease and injuries, research and evaluation, and for
the continuing education of health care providers, all in the interest of
advancing the health of individuals and their communities.