Long COVID: Common Symptoms, Timeline, and When to See a Doctor
Symptoms lasting weeks or months after COVID-19 may be long COVID. Learn common patterns—fatigue, breathlessness, brain fog—and how clinicians evaluate persistent illness.
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Infectious Diseases
Evidence-based guides and patient-friendly explainers in this topic area.
5 articles in Infectious Diseases — evidence-based guides for patients worldwide.
What Is Sepsis? Early Warning Signs That Could Save a Life
Sepsis is a life-threatening reaction to infection. Learn the warning signs (confusion, fast breathing, cold skin), who is at risk, and why every hour matters in emergency care.
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Bird Flu (H5N1): Symptoms, Human Risk, Prevention & Current Updates (2026)
Bird flu (avian influenza H5N1) mainly affects birds, but human cases can occur after close contact with infected animals. Learn symptoms, who is at risk, prevention steps, and when to seek care.
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Flu, RSV, and COVID in 2026: How to Tell Symptoms Apart and When to Seek Care
Winter brings overlapping respiratory viruses—the "quaddemic" of flu, RSV, COVID, and more. Learn how symptoms compare, who faces higher risk, vaccines, and emergency warning signs.
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Lyme Disease: Symptoms, Stages, Rash & Treatment (2026 Guide)
Tick bites can transmit Lyme disease. Learn the bullseye rash, early flu-like symptoms, later-stage signs, antibiotic treatment, testing limits, and prevention for hikers and travellers.
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