Question

which is characteristic of the aids stage of hiv infection?
absence of symptoms
opportunistic infections
minor symptoms such as headache
t-helper count between 200 and 400

Explanation:

AIDS (Acquired Immunodeficiency Syndrome) is the final stage of HIV (Human Immunodeficiency Virus) infection. In this stage, the immune system is severely damaged. One of the key characteristics is the presence of opportunistic infections. These are infections that take advantage of the weakened immune system. Minor symptoms like headache are not characteristic of the AIDS stage. An absence of symptoms is not correct as AIDS is associated with various symptoms due to the compromised immune system. A T - helper count between 200 and 400 is not the characteristic of the AIDS stage. The AIDS stage is defined by a T - helper (CD4) count of less than 200 cells/mm³ and/or the presence of specific opportunistic infections.

Answer:

Opportunistic infections