of ecosystems to deliver services can be assessed by a variety of qualitative. and quantitative methods. An assessment of the condition of ecosystems, the provision of services, and. their relation to human well-being requires an integrated approach.
First proof of an human infected by HIV : 1959 Leopoldville, Congo. EVIDENCE FOR HUMAN INFECTION WITH AN HTLV III/LAV-LIKE VIRUS IN CENTRAL AFRICA, 1959 (Lancet-1986) (HTLVIII/LAV-like virus is the old name for HIV: HTLV-III) Genetic studies about HIV now estimates that HIV-1 appears on humans in Africa, probably few years before 1959.
The epidemic of the immunodeficiency disease AIDS, which began in Sub-Saharan Africa in the 1930s as a mutation of the chimpanzee disease SIV (Simian Immunodeficiency Virus), which was named Human Immunodeficiency Virus (HIV), found its way to the shores of the United States as early as 1960, but was first noticed after doctors discovered clusters ...