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how vaccines work
Science of Vaccines (Infographic)
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"A healthy immune system helps protect you from getting sick by identifying and destroying intruders in your body, like bacteria and viruses. Vaccines teach your body how to fight these intruders so that when they get into your body, your immune system can fight them without making you sick ... "
how effective are vaccines
How vaccines work
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"How do vaccines work and why are they important? In this section we introduce vaccination, herd immunity and other key concepts. ..."