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Abstract artwork depicting holiday vaccinations
Holiday vaccination. Abstract artwork depicting holiday vaccinations, showing a male holidaymaker riding a giant syringe with a hypodermic needle beneath the sun. Vaccines consist of dead or weakened doses of microorganisms which are injected into the body to stimulate the immune system. They provide protection against many infectious diseases. Some diseases are commonplace only in certain areas of the world. Travellers often need protection against yellow fever, hepatitis A and typhoid.
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