{
  "id": 11172436,
  "title": "Think you're protected? New research shows how perceptions of immunity shape vaccine decisions",
  "url": "https://urgent.news/2026/10/01/think-youre-protected-new-research-shows-how-perceptions-of-immunity",
  "topic": "health",
  "section": "Health & Medicine",
  "published": "2026-10-01T11:00:05.000Z",
  "source": {
    "name": "Medical Xpress",
    "slug": "medical-xpress",
    "url": "https://medicalxpress.com/news/2026-10-youre-perceptions-immunity-vaccine-decisions.html"
  },
  "original_language": "en",
  "account": "New research reveals how perceptions of immunity impact vaccine decisions. Assistant professor Allie Sinclair from Rice University's Learning & Behavior Change Lab and her team from Duke University discovered that individuals often misjudge their level of COVID-19 immunity. Some believed they were more protected, while others underestimated their protection. These perceptions influenced whether people got vaccinated, took diagnostic tests, or otherwise protected their health. The study, published in PNAS Nexus, aimed to understand why many weren't staying up to date on recommended COVID-19 vaccines. The researchers found that people might believe they're already sufficiently protected, leading them to think a vaccine dose offers little benefit. To address this issue, Sinclair's team developed an Immunity Estimator tool that provides personalized feedback about users' likely protection against COVID-19 based on their vaccination and infection history. The tool estimated participants' protection against infection and severe disease. When tested on 882 U.S. adults aged 18 to 93, the personalized feedback approach was the most effective at aligning participants' perceptions of risk with their actual risk. It worked for both groups who underestimated and overestimated their protection. Older adults, who are more vulnerable to severe disease, showed a particularly strong effect. Personalized information about waning immunity also increased vaccine uptake among those eligible for an updated vaccine but hadn't received one when the study began. While the study wasn't large enough to establish significant differences in vaccine uptake, the results suggest that addressing people's beliefs about their existing immunity could be crucial for vaccine communication. The approach could be adapted for other recurring vaccines, like the annual flu shot, and even extend to other health decisions, such as taking diagnostic tests or engaging in preventive care.",
  "summary": "When it's time for another vaccine, many people may ask themselves a familiar question: Do I really need another one? The answer may depend, at least in part, on how protected they think they already are.",
  "key_points": [
    "Perceptions of immunity influence vaccine decisions",
    "Immunity Estimator tool aligns perceptions with actual risk",
    "Personalized feedback increases vaccine uptake among eligible individuals"
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}