Acquired immunodeficiency syndrome aids of humans is caused by two lentiviruses human immunodeficiency viruses types 1 and 2 hiv 1 and hiv 2 here we describe the origins and evolution of these viruses and the circumstances that led to the aids pandemic both hivs are the result of multiple . Key points the history of the hiv and aids epidemic began in illness fear and death as the world faced a new and unknown virus however scientific advances such as the development of antiretroviral drugs have enabled people with access to treatment to live long and healthy lives with hiv. Introduction for biology majors to the aids epidemic epidemiology biology and clinical aspects of hiv infection hiv testing and therapy and the personal social economic and legal impacts of aids on the individual and society prerequisites bild 1 and bild 2 book hiv aids pandemic origins science and global impact second edition c2014. This review provides information on the epidemiology economic impact and intervention strategies for the human immunodeficiency virus hiv aids pandemic in developing countries according to the world health organization and the joint united nations programme on hiv aids unaids at the end of 1999 an estimated 343 million people were living with hiv aids. Besides the human cost hiv aids is having profound effects on africas economic development and hence its ability to cope with the pandemic while the impact of hiv aids on people has been well documented it has been much more difficult to observe the pandemics effects on the african economy as a whole or to assess how it might affect africa
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