Purpose – The purpose of the paper is to analyse the interactions of bridging users in Twitter discussionsabout vaccination.

Design/methodology/approach – Conversational threads were collected through filtering the Twitterstream using keywords and the most active participants in the conversations. Following data collection andanonymisation of tweets and user profiles, a retweet network was created to find users bridging the mainclusters. Four conversations were selected, ranging from 456 to 1,983 tweets long, and then analysed throughcontent analysis.

Findings – Although different opinions met in the discussions, a consensus was rarely built. Many subthreadsinvolved insults and criticism, and participants seemed not interested in shifting their positions.However, examples of reasoned discussions were also found.

Originality/value – The study analyses conversations on Twitter, which is rarely studied. The focus on theinteractions of bridging users adds to the uniqueness of the paper.