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pattern of infection in HIV and different CD4 counts
The CD4 count is an indicator of the degree of immunosuppression in those infected with HIV.
Even at low CD4+ve lymphocyte levels, the T lymphocytes that remain still afford some protection against infection. This is manifest in a hierarchy of opportunistic pathogens, which begin to occur as the CD4+ve cell count declines.
CD4 counts and HIV related problems:
| risk of opportunistic infection | risk of HIV-associated | direct HIV |
500 and below | little risk |
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400 and below |
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350 and below |
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200 and below |
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100 and below |
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Reference:
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