Anti-vaccination activists and other people in many countries have spread a variety of unfounded conspiracy theories and other misinformation about COVID-19 vaccines based on misunderstood or misrepresented science, religion, exaggerated claims about side effects, a story about COVID-19 being spread by 5G, misrepresentations about how the immune system works and when and how COVID-19 vaccines are made, and other false or distorted information. This misinformation has proliferated and may have made many people averse to vaccination. This has led to governments and private organizations around the world introducing measures to incentivize/coerce vaccination, such as lotteries, mandates and free entry to events, which has in turn led to further misinformation about the legality and effect of