Relapsing fever is an acute bacterial infectious disease caused by spirochaetes transmitted through bloodsucking insects (lice, ticks) and characterized by periodic paroxysms of fever. The attack terminates after 3 to 10 days. After 1 to 2 weeks a somewhat milder relapse occurs. Recovery eventually occurs after the person develops immunity by experiencing 3-10 relapses. The overall mortality rate for relapsing fever is very low. With treatment, the initial attack is modified and relapses are prevented or reduced in number. Man is the only sufferer of epidemic (louse-borne) relapsing fever; both man and animals suffer from endemic (tick-borne) relapsing fever.
Epidemic relapsing fever occurs mainly in countries with poor cultural and economic development; endemic relapsing fever is found an all the continents.
The Encyclopedia of World Problems and Human Potential is a collaboration between UIA and Mankind 2000, started in 1972. It is the result of an ambitious effort to collect and present information on the problems with which humanity is confronted, as well as the challenges such problems pose to concept formation, values and development strategies. Problems included are those identified in international periodicals but especially in the documents of some 60,000 international non-profit organizations, profiled in the Yearbook of International Organizations.
The Encyclopedia includes problems which such groups choose to perceive and act upon, whether or not their existence is denied by others claiming greater expertise. Indeed such claims and counter-claims figure in many of the problem descriptions in order to reflect the often paralyzing dynamics of international debate. In the light of the interdependence demonstrated among world problems in every sector, emphasis is placed on the need for approaches which are sufficiently complex to encompass the factions, conflicts and rival worldviews that undermine collective initiative towards a promising future.
Non-profit, apolitical, independent, and non-governmental in nature, the UIA has been a pioneer in the research, monitoring and provision of information on international organizations, international associations and their global challenges since 1907.