Some people get sick sooner and others stay well longer, especially with treatment.
The flu-like symptoms typically last for only about week, and then go away on their own. Acute Viral Syndrome is not an ongoing condition that lasts for weeks and weeks or that comes and goes over a long period of time. Many people will have no symptoms at all until years after infection. The symptoms of Acute Viral Syndrome are the same as the symptoms for the flu and many other illnesses. If you have these symptoms right after a possible exposure to HIV, it does not mean you that have the virus, or even that you probably have it.