In these sorts of logistically difficult situations, not only are basic services not accessible, but access to care is virtually impossible.  Diseases that are easily treatable, such as malaria and tuberculosis, can run rampant due to insufficient resources to deal with outbreaks as well as having many people in a small area together..  As a case study of the issues relating to inadequate access to clinics and services one can look at 2007 Kenya.  Extended violence broke out after the elections that year.