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As often as is medically recommended based on your age, where you live, what you do, and where you go. Some vaccines are recommended for babies everywhere, others are boosters of those same vaccines later in life, some or are recommended for specific jobs (such as working in a hospital), and others if you travel to exotic countries. To know which vaccines you or your child should get you should consult a health care professional.

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11y ago
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Wiki User

15y ago

every time you used a needle you you change it afterwards to avoid contaminations.

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Q: How often should you change vaccination needles?
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