Social Media and COVID-19 Vaccine Hesitancy: A Generational Divide

The COVID-19 pandemic underscored the critical role of information sources in shaping public health behaviors, particularly vaccine uptake. Although vaccines were readily available, hesitancy – the reluctance or refusal to vaccinate despite availability – remained a significant obstacle. This article examines how different generations relied on various information sources when making decisions about the COVID-19 vaccine, and how those choices impacted vaccination rates. Understanding these generational differences is crucial for tailoring public health messaging and improving future vaccination campaigns.

The Landscape of Information Sources

Individuals consult a variety of sources when making healthcare decisions, ranging from traditional media and healthcare providers to social media and word-of-mouth recommendations. The reliability and verifiability of these sources vary considerably. Traditional sources like government agencies and news outlets are typically held to higher standards of fact-checking and peer review than social media platforms. The rapid spread of misinformation during the pandemic, often amplified by social media, created an “infodemic” requiring coordinated management by organizations like the World Health Organization (WHO) and the Centers for Disease Control and Prevention (CDC).

Generational Differences in Information Consumption

Generational membership – including Generation Z (born 1995-2012), Millennials (born 1980-1994), Generation X (born 1965-1979), Baby Boomers (born 1946-1964), and the Silent Generation (born 1925-1945) – is associated with distinct historical, technological, social, and political experiences. These experiences influence media preferences and trust. For example, a recent survey found that 9.5% of Gen Z participants primarily trust social media for COVID-19 information, compared to only 3.8% of the Silent Generation ¹.

The Impact of Information Sources on Vaccination Status

A study analyzing data from the 2022 California Health Interview Survey (CHIS) revealed significant associations between relied-upon information sources and COVID-19 vaccination status. Compared to those who primarily used traditional news media, individuals who relied on word-of-mouth, social media, or their doctor were less likely to be vaccinated. Notably, those who reported using no information sources at all were as well significantly less likely to be vaccinated ¹.

Interestingly, the number of information sources consulted was positively correlated with vaccination rates. Individuals who accessed more sources were more likely to be vaccinated, potentially due to a greater accumulation of knowledge and a more informed decision-making process ¹.

Generational Nuances in the Relationship

The relationship between information sources and vaccination status varied across generations. While reliance on social media was generally associated with lower vaccination rates, this association was particularly pronounced among Generation X, Baby Boomers, and the Silent Generation. Gen Z and Millennials did not reveal the same negative correlation between social media use and vaccination. This suggests that younger generations may process information from social media differently, or that their social media feeds include a greater proportion of accurate information ¹.

Implications for Public Health Messaging

These findings highlight the need for tailored public health messaging that considers generational differences in media consumption and trust. Strategies should focus on:

• Reaching Younger Generations on Social Media: Utilizing social media platforms to disseminate accurate vaccine information and counter misinformation, recognizing that these platforms are a primary source of information for Gen Z and Millennials.
• Leveraging Traditional Media for Older Generations: Continuing to utilize traditional media channels – television, radio, and newspapers – to reach Baby Boomers and the Silent Generation.
• Promoting Multiple Information Sources: Encouraging individuals to consult a variety of reliable sources to gain a comprehensive understanding of vaccine benefits and risks.
• Addressing the “None of These” Group: Identifying and addressing the reasons why some individuals do not rely on any information sources, and providing accessible and trustworthy information through alternative channels.

Looking Ahead

Understanding the complex interplay between information sources, generational differences, and vaccine hesitancy is crucial for building public trust and promoting widespread immunization. Future research should explore the specific types of content consumed on social media, the role of algorithmic filtering, and the effectiveness of different messaging strategies in reaching diverse populations. Addressing the infodemic and fostering a more informed public remains a critical challenge for public health officials.

¹ Jia, X., Ahn, S., Morgan, S. E. (2025). The role of social media messages and content creators in shaping COVID-19 vaccination intentions. Frontiers in Digital Health, 7, 1448884. https://www.frontiersin.org/journals/digital-health/articles/10.3389/fdgth.2025.1448884/full