Episode Summary
Executive Summary: The episode examines a Politico poll headline claiming more Americans doubt vaccine safety than trust it, and argues the headline overstates what the survey actually showed. Using expert critique, the segment highlights how mixed, multi-part question wording and unclear vaccine context can distort interpretation, while broader polls still show strong confidence in routine childhood vaccines.
Main Topics: Politico poll headline and its claim (Priority: 5/5): The episode centers on Politico's headline asserting that more Americans doubt vaccine safety than trust it, and questions whether the underlying survey supports that framing. Limits of survey question design (Priority: 5/5): Dr. David Higgins argues the key poll question bundles multiple ideas—science, debate, enforcement, and safety—making it hard to know what respondents were actually answering. Broader public confidence in vaccines (Priority: 4/5): The program contrasts the Politico result with other polls showing strong support for vaccine safety and MMR benefits, suggesting no dramatic collapse in confidence. Different attitudes toward different vaccines (Priority: 4/5): The transcript notes that views on COVID-19 vaccines may differ sharply from attitudes toward childhood vaccines like MMR, complicating interpretation of 'vaccines' in general. Alternative survey question and headline correction (Priority: 5/5): A second Politico survey item appears more directly related to safety and still shows a majority expressing trust, after which Politico changed the headline and admitted an editing error.
Key Arguments: The Politico headline was based on a question that mixed several distinct beliefs into one binary choice, reducing interpretability. A respondent could support vaccine science while still disagreeing with blanket statements about questioning or enforcing vaccination, so the 46%-39% split does not cleanly measure safety belief. Survey answers may reflect opinions about COVID-19 vaccines rather than all vaccines, which can skew general conclusions. Other recent polls show broad vaccine confidence, so the Politico result does not indicate a sharp nationwide drop in trust. A different survey item in the same poll suggested a clear majority held views consistent with trusting vaccine safety. Politico ultimately revised the headline, indicating the original wording overstated the finding.
Data Points: Measles cases in the US last year: more than 2,000 - Cited as evidence of a major outbreak amid vaccine policy conflict Measles deaths in the US last year: 3 - Deaths associated with the worst US measles outbreak in decades Measles cases in the US so far in 2026: more than 1,500 - Shows continued outbreak activity Reuters Ipsos poll (February): 84% - Respondents saying vaccines for diseases like measles, mumps, and rubella are safe for children Pew poll (November): 84% - Americans saying MMR benefits outweighed risks Pew poll change from 2023: 88% to 84% - Small decline in belief that MMR benefits outweigh risks Politico poll forced-choice question: 39% vs 46% - 39% chose the view that vaccine science is clear; 46% chose that facts are still up for debate Alternative Politico survey item - pro-safety responses: 63% total - 26% said risks are overblown; 37% said risks are very rare and benefits outweigh them Alternative Politico survey item - skeptical responses: 15% - Said vaccine risks are not as rare as experts claim Alternative Politico survey item - strongest anti-vaccine response: 10% - Said vaccine risks are significant and enforcing vaccines is dangerous
Pivotal Quotes: "I immediately thought, wow, that seems out of step with other recent surveys and polls." — David Higgins: Reaction to the Politico headline and poll result "I thought this question is very difficult to interpret." — David Higgins: Critique of the poll question's bundled wording "We have not fallen off a cliff of vaccine confidence." — Narrator: Summary of broader polling trends compared with the Politico headline
Implications: Listeners should treat sensational poll headlines cautiously, especially when question wording is complex. For media and pollsters, the episode underscores the need for clear, single-issue survey design and careful headline writing.
About More or Less Behind the Statistics
Tim Harford and the More or Less team try to make sense of the statistics which surround us. From BBC Radio 4