1 Most of these diseases are infections, caused by a variety of bacteria, viruses, and parasites that can be foodborne. 2  Other diseases are poisonings, caused by harmful toxins or chemicals that have contaminated the food, for example, poisonous mushrooms.
(cluster designation 4) symbol for a glycoprotein expressed on the surface of helper T lymphocytes and other immune cells. CD4 serves as a receptor for human immunodeficiency virus envelope glycoprotein gp120.
Best Answer: Basically HIV turns to AIDS by killing off your CD4 cells (T-cells). The CDC considers an HIV infected person to have AIDS when their CD4 count is below 200/mm3 regardless of signs or symptoms.est Answer: Basically HIV turns to AIDS by killing off your CD4 cells (T-cells). The CDC considers an HIV infected person to have AIDS when their CD4 count is below 200/mm3 regardless of signs or symptoms.