Dec 21, 2018 · Learn symptoms of this infection, how it’s diagnosed, treatment options, and prevention methods.

Aug 26, 2024 · Learn about identifying flu symptoms, how the diagnosis works, common complications, and more.

Dec 15, 2025 · Learn influenza A symptoms, early warning signs, severe complications, and when to seek care, with expert clinical insights and trusted sources.

Oct 19, 2025 · Influenza A often causes fever, cough, and fatigue. This highly contagious virus primarily affects the respiratory system, including your nose, throat, and lungs.

4 days ago · Symptoms of the flu such as a sore throat and a runny or stuffy nose are common. You may also get these symptoms with other illness such as a cold. But colds tend to start …

7 hours ago · Flu symptoms Langlois said she and her colleagues are seeing a fair amount of classic flu symptoms: fevers, body aches and extreme fatigue.

Nov 9, 2025 · Following exposure to the influenza A virus, symptoms usually develop within 1 to 4 days, most commonly around the two-day mark. You might feel completely healthy one …

Oct 19, 2025 · Knowing the early signs of flu—sudden fever, generalized muscle aches—can help you seek treatment to reduce the severity and duration of influenza.

May 2, 2025 · Influenza A is an acute respiratory viral infection (ARI), a respiratory illness caused by infection with the influenza A virus H1N1, characterized by the sudden onset of high fever, …

Aug 29, 2024 · Some people who get the flu have only mild symptoms. Others become severely ill and need to go to the hospital. The flu can also be fatal. Getting a flu shot every year can help …