Clinical Report: Preferences for Social Media Vaccine Messaging Attributes

Overview

This study assessed preferences for social media vaccination posts among California adults using discrete choice experiments and a Swiss tournament design. Key attributes influencing preference included messenger type, source credibility, tone, artwork style, and topic focus, providing actionable insights for optimizing vaccine communication strategies.

Background

Vaccine hesitancy remains a significant public health challenge, with low uptake of influenza and COVID-19 vaccines in California despite their proven effectiveness. Social media platforms offer a potent avenue for public health messaging, yet the specific characteristics that enhance message acceptance and confidence are not well defined. Understanding which features of social media posts resonate with the public can improve vaccine promotion efforts and counter misinformation.

Data Highlights

Participants evaluated 16 existing vaccination-related social media posts categorized by artwork type (cartoon or real photographs), messenger (community members or health care workers), source (unsourced, CDC, CDPH, UCSF), tone (factual, funny, informative), age group of messenger (all ages, midlife adults, older adults), and topic (general vaccination, COVID-19, influenza). The study used a discrete choice experiment and Swiss tournament design to quantify preferences and rank posts.

Key Findings

• Posts featuring health care workers as messengers were preferred over those with community members.
• Sources with recognized public health authority (CDC, CDPH, UCSF) increased trust and preference compared to unsourced posts.
• Factual and informative tones were favored over humorous tones in vaccine messaging.
• Real photographs were generally preferred to cartoons, enhancing perceived message credibility.
• Posts focusing on COVID-19 and influenza vaccination topics were relevant and influenced preferences.
• Age group of messenger had variable impact, with midlife and older adults often preferred messengers.

Clinical Implications

Public health campaigns should prioritize social media posts featuring credible health care professionals and authoritative sources to enhance vaccine confidence. Employing factual and informative tones with real photographic imagery can improve engagement and acceptance. Tailoring content to address specific vaccine topics like COVID-19 and influenza may further optimize outreach effectiveness.

Conclusion

This study identifies key social media post attributes that influence vaccine message preference and confidence, offering evidence-based guidance to refine public health communication strategies. Leveraging these insights can help increase vaccination uptake and address hesitancy through targeted, trusted messaging.

References

1. Rising vaccine hesitancy and vaccination coverage data (2024)
2. Social media as a public health tool and messaging effectiveness (2024)
3. Discrete choice experiments in public health messaging research (2024)