Flu-like symptoms are common early on in the progression of HIV, and often people confuse the two. Low-grade fever that doesn't go away after a few days and a sore throat might indicate the presence of the HIV. The virus causes a weakened immune system, and fever is the body's response to fighting off infection. Some women never exhibit more than mild flu-like symptoms -- sometimes it takes years for other symptoms to develop. A physician should evaluate any persistent low-grade fever -- between 99.8°F (37.7°C) and 100.8°F (38.2°C) -- that doesn't respond to treatment.
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