AIDS

ACQUIRED IMMUNODEFICIENCY SYNDROME (aids

introduction

Acquired immunodeficiency syndrome was first reported in 1981 by the Centers for Disease Control , with the identification of the human immunodeficiency virus 1 (HIV-1 ) as the causative agent (CDC , 1981 . To date , approximately 60 million individuals around the world are infected with the HIV-1 virus and this infection has caused the death of 25 million people (UNAIDS , 2005 . The analysis of HIV in several continents around the world has shown that there are certain evolutionary trends that would lead us to a better understanding of the

br pathogenesis , transmission and ultimately , treatment of AIDS around the world . The greatest number of AIDS cases has already reached its highest number in the last decade , hence access to effective anti-HIV agents is of utmost concern

Global epidemiological analysis of HIV infections has shown that the HIV is distribution around the world through two major patterns . One distribution pattern has been observed among several countries around the world , wherein there are specific times when an epidemic erupts and the virus infects a significant number of individuals in a particular country . In addition , these epidemics involve infection of a specific population , which is often considered to be at risk , including homosexuals , drug addicts and those individuals who employ sex as a way of living . The other distribution pattern of HIV is inherently observed in countries situated next to the Sahara desert , of which residents of these countries are not involved in any of the peculiar activities of HIV patients in...