The flu’s impact extends beyond typical respiratory symptoms, affecting the brain by causing short-term issues like brain fog and fatigue, and potentially long-term neuroinflammation. Severe flu infections increase the risk of long-term cognitive issues and neurological complications compared to severe COVID-19, due to the widespread inflammation caused by the virus. The flu’s impact extends beyond typical respiratory symptoms, affecting the brain by causing short-term issues like brain fog and fatigue, and potentially long-term neuroinflammation. Severe flu infections increase the risk of long-term cognitive issues and neurological complications compared to severe COVID-19, due to the widespread inflammation caused by the virus. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle