Influenza, commonly known as the flu, is a contagious viral infection that affects the nose, throat, and sometimes the lungs. It spreads easily through droplets when an infected person coughs, sneezes, or talks.
Symptoms often include fever, cough, sore throat, body aches, fatigue, and chills, and it can range from mild to severe depending on the person’s health.
Understanding who is at high risk for severe flu Seasonal influenza remains one of the most serious public health concerns across North America. Every year, thousands of people in the…
Influenza outbreaks continue to challenge healthcare systems across North America every year. The United States and Canada both operate advanced flu surveillance systems, but they differ significantly in how they…
Influenza continues to evolve every year, and one of the biggest concerns during the 2025–2026 flu season is the emergence of drifted H3N2 strains. Many people are asking whether the…