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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. The latency stage ...
HIV encephalopathy; 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.
Standard anti-HIV IgG antibody tests cannot be used to reliably indicate a child's infection status before 18 months of age, so viral antigen tests are used. In the new system, HIV-infected children are classified into mutually exclusive categories according to three parameters: a) infection status b) clinical status c) immunologic status
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 .
HIV-associated neurocognitive disorders (HAND) are neurological disorders associated with HIV infection and AIDS.It is a syndrome of progressive deterioration of memory, cognition, behavior, and motor function in HIV-infected individuals during the late stages of the disease, when immunodeficiency is severe. [1]
Kaposi's Sarcoma (KS) is an extremely common disease that arises in AIDS patients and HIV-infected individuals. The condition is characterized by large purple lesions on the skin and mouth. KS presents itself differently for everyone affected by it, and its symptoms and progression varies from person to person as well. [5]
Nucleic-acid-based tests amplify and detect one or more of several target sequences located in specific HIV genes, such as HIV-I GAG, HIV-II GAG, HIV-env, or the HIV-pol. [32] [33] Since these tests are relatively expensive, the blood is screened by first pooling some 8–24 samples and testing these together; if the pool tests positive, each ...
Following infection with HIV, the rate of clinical disease progression varies enormously between individuals. Many factors such as host susceptibility and immune function, [2] [3] [4] health care and co-infections, [5] [6] [7] as well as factors relating to the viral strain [8] [9] may affect the rate of clinical disease progression.
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