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.
The time period from infection with HIV until the body produces enough HIV antibodies to be detected by an HIV antibody test is called the window period. Most people develop HIV antibodies within 3 months after they are infected with HIV. But the window period can vary depending on the HIV test used.In general, anyone who has a negative result on an HIV antibody test within 3 months of a possible exposure to HIV should have the test repeated in 3 months.The HIV antigen/antibody test can detect both HIV antigen (a part of the virus) and HIV antibodies in blood.n general, anyone who has a negative result on an HIV antibody test within 3 months of a possible exposure to HIV should have the test repeated in 3 months. The HIV antigen/antibody test can detect both HIV antigen (a part of the virus) and HIV antibodies in blood.