You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Rapid progression of disease with full blown manifestation in AIDS occurs when T4 cell count falls bellow- and explain in detail?
Rapid progression of disease with full-blown manifestation in AIDS occurs when CD4 T cell count falls below 200/µL.