Twitter will start labeling tweets that share misleading information about COVID-19 vaccines. The labels will include links to relevant information from official bodies like the Centers for Disease Control and Prevention. Twitter plans to enforce a five-strike system for repeat offenders that can lead to locked accounts and permanent suspension. The new labels are similar to Facebook’s anti-misinformation banners or the labels Twitter began deploying early in the pandemic. While the labels seem helpful, they don’t necessarily deter people from sharing the information.