flu symptoms how many hours till onset from exposure
Unlike a cold, flu symptoms usually come on suddenly. Another key difference is a fever, which might not happen with a cold. You might also have: 1  Severe aches in muscles and joints. 2  Pain and tiredness around your eyes. 3  Weakness or extreme fatigue. 4  Warm, flushed skin and red, watery eyes. 5  A headache. 6  A dry cough. 7  A sore throat and runny nose.
Early Stage of HIV. Within 2-4 weeks after HIV infection, many, but not all, people experience flu-like symptoms, often described as the âworst flu ever.â This is called acute retroviral syndrome (ARS) and itâs the bodyâs natural response to the HIV infection. Symptoms can include: