GNU Health (GH) is a free and open-source Health and Hospital Information System (HIS) that can manage the internal processes of a health institution, such as financial management, electronic medical records (EMR), stock & pharmacies or laboratories (LIMS). It is already used in various hospitals, health centers, and medical research facilities in various countries, most developing countries, across the world.
The program would normally be installed on x86 servers running Linux or FreeBSD, but there’s also a version for Raspberry Pi 3 and 4 based on openSUSE called GNU Health Embedded, and work is being done to port the solution to Olimex OlinuXino SBC’s.
Contrary to what the photo above implies, GNU Solidario does not sell the hardware pre-loaded with GNU Health Embedded, but you can download it for free from their servers, and if you want to support the project you could always make a donation.
As I understand it, GNU Health Embedded does not fully replace GNU Health installed on more powerful servers capable of handling a large number of patients, but the Raspberry Pi based solution enables real-time monitoring of vital signs in hospital settings, retrieve information from laboratory instruments or/and act as a family/personal health tracker.
The Wiki explains the Embedded version is especially suited for remote areas without internet, academic Institutions, domiciliary units, home nursing, and laboratory stations. It is apparently particularly useful to prevent the spread of mosquito-borne diseases:
GNU Health installed on Raspberry Pi in domiciliary units (houses) can track the infrastructure, sanitary conditions, and prevent vector-borne diseases like Malaria, Dengue or Chagas disease.
More details may be found on the official website.