why do viral infection need time to pure
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Many human illnesses are caused byinfection with either bacteria orviruses. Most bacterial diseases canbe treated with antibiotics, although antibiotic-resistant strains are starting to emerge. Viruses pose a challenge to the body's immune system because they hide inside cells.
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as these are not common disease spread to everyone. and also as this disease stays for longer time in our body so it need time to pure
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