Your answer would be in an doorway
Antibiotics are used to treat infections. If you use the antibiotic in the wrong way, more harm can be done than good. With that being said, you should know that antibiotics only work against infections caused by fungi, certain parasites and bacteria. They do not work against infections caused by viruses.
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The first line of defence<span> (or outside </span>defence<span> system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.</span>