13391 IUPAC Gold Book - live attenuated vaccine 10.1351/goldbook.13391 13391 current 1 Vaccine prepared from living attenuated organisms or from viruses that have been attenuated but can still replicate in the cells of the host organism. The live attenuated vaccine contains a version of living bacteria or viruses that have been weakened (attenuated) so they can no longer cause disease. Since they are very close to the actual infection, they can cause strong cell and antibody responses. attenuated vaccine https://goldbook.iupac.org//terms/view/12911 PAC, 2012, 84, 1113. 'IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)' on page 1203 (https://doi.org/10.1351/PAC-REC-11-06-03) https://goldbook.iupac.org/terms/view/13391/html https://goldbook.iupac.org/terms/view/13391/json https://goldbook.iupac.org/terms/view/13391/plain Citation: 'live attenuated vaccine' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.13391 The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. 2026-04-17T21:21:16+00:00