AI Knows Vaccines Better Than Ever, But Can It Be Trusted…

AI Knows Vaccines Better Than Ever, But Can It Be Trusted for Medical Advice? Published: June 2026 | Category: Artificial Intelligence, Vaccines, Digital Health | TALMedora Editorial Desk Artificial intelligence is increasingly becoming a source of health information for millions of people. From symptom checkers to medical chatbots, many users now turn to AI before consulting a healthcare professional. But how accurate is AI when it comes to vaccines? A new international study suggests that today's leading AI models possess impressive vaccine knowledge, often answering questions correctly. However, researchers also identified important weaknesses, particularly when AI systems were asked about vaccine schedules, eligibility, contraindications, and dosing recommendations. The findings highlight both the promise and the limitations of AI in public health communication. Researchers created a large vaccine knowledge benchmark designed to evaluate how well major AI models understand vaccination-related information. The assessment included nearly 1,900 multiple-choice questions covering: • Vaccine safety • Vaccine effectiveness • Vaccination schedules • Side effects • Public misconceptions • Disease prevention • Eligibility recommendations • Accessibility and availability Questions were developed using information from trusted health organizations and scientific literature, ensuring that the benchmark reflected evidence-based vaccine knowledge. The study tested 13 leading AI models from different developers. How Well Did AI Perform? Overall, the results were encouraging. Most modern AI systems correctly answered a large majority of vaccine-related questions. Some of the best-performing models achieved accuracy levels close to 90%, demonstrating a strong understanding of common vaccine topics. Researchers found