25/03/2026
Your body has its own powerful defense system working 24/7 to protect you from harmful bacteria and viruses. When an infection enters the body, the immune system activates several warning signs to help fight it.
Some common signs include fever, fatigue, swollen lymph nodes, inflammation, coughing, and body aches. While these symptoms can feel uncomfortable, they are often signals that your body is actively defending itself.
Understanding these signs can help you recognize when your immune system is at work and when it might be time to seek medical attention.
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Discover 8 signs your body is fighting an infection, including fever, fatigue, swollen lymph nodes, and inflammation. Learn how the immune system