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The presumptive criteria are designed for use where access to confirmatory diagnostic testing for HIV infection by means of virological testing (usually nucleic acid testing, NAT) or P24 antigen testing for infants and children aged under 18 months is not readily available. Conditions where confirmatory diagnostic testing is necessary:
Figure 1. Early Symptoms of HIV. The stages of HIV infection are acute infection (also known as primary infection), latency, and AIDS.Acute infection lasts for several weeks and may include symptoms such as fever, swollen lymph nodes, inflammation of the throat, rash, muscle pain, malaise, and mouth and esophageal sores.
WHO Disease Staging System for HIV Infection and Disease was first produced in 1990 by the World Health Organization [1] and updated in 2007. [2] It is an approach for use in resource limited settings and is widely used in Africa and Asia and has been a useful research tool in studies of progression to symptomatic HIV disease .
Without treatment, this second stage of the natural history of HIV infection can last from about three years [34] to over 20 years [35] (on average, about eight years). [36] While typically there are few or no symptoms at first, near the end of this stage many people experience fever, weight loss, gastrointestinal problems and muscle pains. [ 1 ]
The WHO recommends treating all children less than 5 years old, and starting all children older than 5 with stage 3 or 4 disease or CD4 <500 cells/ml. [44] DHHS guidelines are more complicated but recommend starting all children less than 12 months old and children of any age who have symptoms. [61]
Although the symptoms of immunodeficiency (characteristic of AIDS) do not appear for years after a person is infected, the bulk of CD4 + T cell loss occurs during the first weeks of infection, especially in the intestinal mucosa, which harbors the majority of the lymphocytes found in the body. [4]
AIDS was first recognized by the United States Centers for Disease Control and Prevention in 1981, and the HIV virus was identified as its cause shortly after. [ 16 ] Societal effects
Wasting syndrome in the absence of a concurrent illness other than HIV infection that could explain the following findings: a) persistent weight loss more than 10% of baseline OR b) downward crossing of at least two of the following percentile lines on the weight-for-age chart (e.g., 95th, 75th, 50th, 25th, 5th) in a child at least 1 year of ...