The quality of Nigerian healthcare institutions is generally considered rather poor but has been steadily improving in recent years. There might also be shortages of medical material, and the blood supply of the country is not considered safe. Hygiene conditions are problematic, especially outside the large cities. A major problem afflicting the healthcare system in Nigeria is the so-called “brain drain” of doctors and medical staff. It is estimated that there are 4 doctors for every 10,000 inhabitants. Highly-trained experts often leave the country in order to pursue their profession in countries with better infrastructure or higher wages.