Which type of disease is most dangerous for the health?
For class 9
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The deadliest disease in the world is coronary artery disease (CAD). Also called ischemic heart disease, CAD occurs when the blood vessels that supply blood to the heart become narrowed. Untreated CAD can lead to chest pain, heart failure, and arrhythmias.
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Hepatitis B. According to current statistics, hepatitis B is the most common infectious disease in the world, affecting some 2 billion people -- that's more than one-quarter of the world's population. ...
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