Vaccine safety explained: What the science actually says

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May 1, 2025 • 5 mins

Are vaccines safe? What’s actually in them? In this 2-part episode of Science in 5, WHO’s Dr. Kate O’Brien breaks down how vaccines are tested, approved, and monitored even after they reach the public. She also explains what happens if a safety concern is flagged.

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.css-14f5ked{margin:0;word-break:break-word;display:-webkit-box;-webkit-box-orient:vertical;box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;}Vaccine safety explained: What the science actually says