#health #vaccine #science
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If you are being offered a vaccine, you might want to know how safe vaccines are. Vaccines have a very strong safety record. Regulators assess them for side effects while they are being tested in clinical trials and continually monitor for any signs of risk when they are being used in the general population. They weigh up the risk of any side-effects with the risk of getting the disease and being harmed by it. Mild reactions such as headaches, fatigue, a slight fever and soreness at the site of injection are very common and go away quickly. The number of serious side-effects by comparison are very low. Many vaccines have now been in use for decades, with billions of doses given around the world every year, meaning there are a large amount of data on any potential harmful effects. Occasionally, side-effects caused by a vaccine are found to be unacceptable and development of the vaccine is stopped, or it is withdrawn from the market.
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