API stands for Application Programming Interface, i.e. API is the way for an application to interact with certain system/application/library/etc. For example, there are API's for OS (WinAPI), API's for other applications (like databases) and for specific libraries (for example, image processing), etc.
Acute HIV infection: The first stage of HIV, known as the primary or acute infection, may cause symptoms of fever and skin rash. This is because the virus is multiplying rapidly in the body and infecting immune cells. This phase generally lasts several weeks.
The fever is the immune systemâs attempt to kill the infection. Very rarely, however, this immune response can result in a fever high enough to cause permanent harm or even life-threatening complications due to overheating. The causes of high fever vary, and they include such relatively routine conditions as sore throat, sinusitis, and urinary tract and other infections. Some causes may be more serious and include such conditions as appendicitis and pneumonia. In rare cases, high fevers can occur without any infection as a result of arthritis, lupus, or certain gastrointestinal and vascular disorders.