Correcting misinformation by health organizations during measles outbreaks: A controlled experiment

During epidemic crises, some of the information the public receives on social media is misinformation. Health organizations are required to respond and correct the information to gain the public's trust and influence it to follow the recommended instructions. (1) To examine ways for health organizations to correct misinformation concerning the measles vaccination on social networks for two groups: pro-vaccination and hesitant; (2) To examine the types of reactions of two subgroups (pro-vaccination, hesitant) to misinformation correction; and (3) To examine the effect of misinformation correction on these two subgroups regarding reliability, satisfaction, self-efficacy and intentions. A controlled experiment with participants divided randomly into two conditions. In both experiment conditions a dilemma was presented as to sending a child to kindergarten, followed by an identical Facebook post voicing the children mothers' concerns. In the third stage the correction by the health organization is presented differently in two conditions: Condition 1 -common information correction, and Condition 2 -recommended (theory-based) information correction, mainly communicating information transparently and addressing the public's concerns. The study included (n = 243) graduate students from the Faculty of Social Welfare and Health Sciences at Haifa University. A statistically significant difference was found in the reliability level attributed to information correction by the Health Ministry between the Control condition and Experimental condition (sig