Twitter has added a new COVID-19 vaccine fact box to users’ timeline with the latest vaccine info in their particular country. When users tap the box, they are directed to a new Twitter event page that has content with information about vaccines, a collection of tweets from organizations like the World Health Organization. The page is unfolded in several parts and contains details on the vaccine efficacy, potential side effects and advice for pregnant people. Twitter COVID-19 fact box is the latest effort by a major online platform to promote the COVID-19 vaccines. In the past few weeks, Facebook has published vaccination information in its News Feed, while YouTube is currently running an ad campaign to encourage people to be vaccinated.