Impact of Media Exposure on Vaccine Attitudes, Intentions, and Hesitancy: A Systematic Review

It’s a Tuesday evening in late April 2026, and the neon glow of the Austin skyline reflects off the Colorado River as another round of headlines about vaccine hesitancy flickers across smartphones at a South Congress Avenue café. Across town, at the Dell Medical School, researchers are parsing data that suggests something unsettling: where people get their news isn’t just shaping their opinions on politics or pop culture—it’s directly influencing whether they choose to vaccinate their kids against measles, or themselves against the latest respiratory virus making the rounds at Barton Springs Pool.

The latest systematic review, published this week in the Journal of Medical Internet Research, doesn’t just confirm what many in public health have long suspected—it quantifies it. And for a city like Austin, where tech workers, university students, and long-time residents coexist in a patchwork of digital bubbles, the findings hit close to home. The study, led by researchers from the University of Catania and Italy’s National Institute of Public Health, analyzed over 17,000 records to determine how communication channels shape vaccine attitudes. What they found wasn’t just a correlation—it was a roadmap of how misinformation spreads, who it reaches, and, crucially, who might still be persuaded otherwise.

The Digital Divide in Your News Feed

The review’s most striking takeaway? The type of media people consume doesn’t just reflect their vaccine attitudes—it actively reinforces them. Traditional media (think local TV news or NPR affiliates like KUT 90.5) and authoritative health sources (such as the CDC or the Texas Department of State Health Services) were consistently linked to higher vaccine literacy and lower hesitancy. But for those who relied on social media, alternative health newsletters, or politically aligned digital outlets, the opposite was true. The effect wasn’t subtle: the study found that exposure to non-authoritative sources was associated with a “significant reduction” in vaccine adherence, particularly for routine immunizations like the MMR vaccine.

This isn’t just an abstract public health concern for Austin. Measles cases have been creeping upward in Texas since 2024, with Travis County reporting its first outbreak in over a decade last summer. The city’s high rate of international travel—fueled by SXSW, ACL Festival, and the tech industry’s global workforce—makes it a potential hotspot for vaccine-preventable diseases. And yet, the review’s data suggests that even here, in a city often stereotyped as progressive, media habits are creating pockets of vulnerability. The 25-34 age group, a demographic that dominates Austin’s rental market and co-working spaces, was particularly responsive to social media campaigns—but not always in the way public health officials hope. While some interventions increased vaccine uptake in this group, others simply amplified skepticism, depending on the messenger.

Who’s Listening—and Who’s Not

The review too dismantles some long-held assumptions about who is most susceptible to vaccine misinformation. Gender? No significant effect. Political orientation? The study found that while partisan media consumption correlated with hesitancy, the persuasive power of online memes and social media campaigns transcended political lines. Age, however, was a different story. Adults over 50 showed the lowest levels of hesitancy, likely due to higher trust in traditional media and personal memories of pre-vaccine eras. Meanwhile, the 25-34 cohort—often the target of digital health campaigns—showed the most variability, suggesting that this group is both the most reachable and the most at risk of being swayed by misinformation.

For Austin, this has real-world implications. The city’s vibrant but fragmented media ecosystem—from the Austin Chronicle’s investigative health reporting to the hyper-local Facebook groups where parents debate school vaccine policies—means that public health messages are competing with a cacophony of voices. The review’s authors note that “communication strategies must be tailored not only to the message but to the medium and the audience’s preexisting trust in that medium.” In other words, a one-size-fits-all campaign won’t cut it in a city where a tech worker in Domain Northside might get their news from Reddit, while a retiree in Mueller relies on the Austin American-Statesman.

The Local Ripple Effects

The stakes proceed beyond individual health choices. Austin’s economy—heavily reliant on tourism, higher education, and tech—is uniquely vulnerable to outbreaks. A measles cluster at UT Austin or a norovirus outbreak during SXSW could have cascading effects, from canceled events to reputational damage. The review’s findings underscore how media habits are intertwined with these risks. For example, the study highlights that vaccine-hesitant individuals were more likely to turn to “alternative health providers” or social media influencers for advice. In Austin, where wellness culture is big business (think Whole Foods’ global headquarters or the proliferation of boutique IV therapy clinics), this trend is already visible. The city’s health department has reported an uptick in requests for non-standard vaccine schedules, often driven by misinformation shared in local parenting groups or wellness podcasts.

But the news isn’t all dire. The review also points to a silver lining: targeted digital campaigns can work. The study found that “persuasive online interventions” were effective at increasing vaccine intentions, particularly when they leveraged trusted local voices. In Austin, that might indicate partnering with influencers like @ATXFoodie (a popular local food blogger who also covers health topics) or organizations like the Central Texas Immunization Coalition, which has been working to counter misinformation in Spanish-language media. The key, the authors argue, is meeting people where they are—literally. For a city where 40% of residents were born outside Texas and 35% speak a language other than English at home, that means multilingual, culturally tailored messaging.

What In other words for Austinites

If you’re a parent in Hyde Park, a UT student in West Campus, or a small business owner in East Austin, the review’s findings are a call to action—not just to get vaccinated, but to critically evaluate where you’re getting your health information. The study’s lead author, Vito Nicosia, puts it bluntly: “The infodemic is not a side effect of the pandemic; This proves a parallel crisis.” For Austin, a city that prides itself on innovation and community, the challenge is clear: how do we ensure that our digital-first culture doesn’t exit public health behind?

One place to start is by diversifying your media diet. The review found that people who consumed a mix of traditional and digital media had higher vaccine literacy than those who relied solely on one source. That might mean following the Texas DSHS on Twitter for updates, but also tuning into KUT’s “Texas Standard” for in-depth reporting. It might mean fact-checking a viral Instagram post about vaccine side effects with the CDC’s website before sharing it in your neighborhood group.

For local leaders, the implications are even more urgent. The review’s data suggests that Austin’s public health infrastructure needs to adapt to the digital age. That could mean expanding the city’s “Vaccine Ambassadors” program, which trains community members to counter misinformation in their networks, or investing in AI-driven tools to identify and debunk false claims in real time. It could also mean working with platforms like Nextdoor or local Facebook groups to elevate authoritative voices when vaccine-related questions arise.

The Local Resource Guide: Who You Need in Your Corner

Given my background in public health journalism and years covering Austin’s health landscape, I’ve seen firsthand how misinformation can take root—and how the right professionals can help counter it. If this trend is hitting home for you or your community, here are the three types of local experts you should know about, along with what to look for when seeking their help:

Public Health Communication Specialists

These are the professionals who design and implement campaigns to counter misinformation and promote vaccine literacy. In Austin, look for specialists with experience in:

• Multilingual and multicultural outreach (critical for a city where over 30% of residents speak Spanish at home).
• Digital media strategy, including social media monitoring and influencer partnerships.
• Community-based participatory research, which involves working directly with local groups to tailor messages.
• Affiliations with organizations like the Central Texas Immunization Coalition or the Dell Medical School’s Population Health program.

Ask potential hires about their track record with measurable outcomes—have their campaigns led to increased vaccine uptake in specific demographics? Can they share case studies from past work in Austin or similar cities?

Community Health Workers (CHWs) and Promotores de Salud

CHWs are trusted local figures who bridge the gap between health systems and communities. In Austin, they’re often embedded in neighborhoods with high vaccine hesitancy, such as parts of East Austin or Manor. Look for:

• Certification through the Texas Department of State Health Services or programs like the Austin Public Health’s CHW training.
• Experience working with specific cultural or linguistic groups, such as Austin’s Vietnamese, Latino, or African immigrant communities.
• A focus on vaccine education, not just general health promotion.
• Partnerships with local clinics, schools, or faith-based organizations.

CHWs should be able to provide references from community members or organizations they’ve worked with. Their value lies in their ability to build trust, so look for those with deep roots in the neighborhoods they serve.

Digital Health Literacy Educators

These professionals specialize in teaching individuals and organizations how to navigate health information online. In a tech-savvy city like Austin, they’re increasingly in demand. Seek out educators who:

• Have backgrounds in both public health and digital media, such as former journalists or health communicators with social media expertise.
• Offer workshops or training sessions for schools, workplaces, or community groups (many are affiliated with UT Austin’s Center for Health Communication or local libraries).
• Can demonstrate success in improving digital health literacy, such as through pre- and post-workshop assessments.
• Are familiar with the specific misinformation trends affecting Austin, such as false claims about vaccine ingredients or links to chronic illnesses.

Ask for sample lesson plans or testimonials from past participants. The best educators will tailor their content to the audience, whether it’s parents, seniors, or young adults.

One final note: if you’re a parent, educator, or employer in Austin, don’t underestimate the power of local networks. The review’s authors emphasize that “interpersonal communication” remains one of the most effective tools for countering hesitancy. That could mean starting a conversation with your child’s pediatrician at a clinic like Austin Regional Clinic, or attending a town hall hosted by the Travis County Medical Society. In a city where word-of-mouth carries as much weight as a viral tweet, sometimes the most impactful action is simply talking to your neighbor.

Ready to find trusted professionals? Browse our complete directory of top-rated public health and vaccine literacy experts in the Austin area today.