How Is Tuberculosis Diagnosed? Skin and Blood Tests, Sputum Cultures and Chest Imaging
Tuberculosis is diagnosed in two stages. A skin test or a blood test (interferon-gamma release assay) shows whether the immune system has ever met…
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Blog Category
Infections & Travel Health
Articles on infections and travel health: vaccines before a trip, food and water safety, fever after travel and how to tell when an infection needs medical treatment.
Is It a Cold, the Flu or COVID-19? How Doctors Tell Them Apart When Symptoms Overlap
A cold, the flu and COVID-19 share sore throat, cough, congestion and fatigue, so symptoms alone rarely settle the question. Doctors weigh onset speed,…
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