Illnesses caused by harmful germs like bacteria or viruses that get into your body and make you sick.
From Latin 'infectus,' past participle of 'inficere' meaning 'to taint' or 'to corrupt,' combining 'in-' (in) and 'facere' (to make). The word originally meant being 'stained' or 'spoiled.'
Your body is actually fighting thousands of tiny infections every single day through your immune system—most people never notice because their immune cells are constantly winning those microscopic battles!
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