Onward Virus Transmission after Measles Secondary Vaccination Failure

Autor: Isaac Tranter, Nicolas Smoll, Colleen L. Lau, Dusty-Lee Williams, Deborah Neucom, Donna Barnekow, Amalie Dyda
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Emerging Infectious Diseases, Vol 30, Iss 9, Pp 1747-1754 (2024)
Druh dokumentu: article
ISSN: 1080-6040
1080-6059
DOI: 10.3201/eid3009.240150
Popis: Measles in persons with secondary vaccination failure (SVF) may be less infectious than cases in unvaccinated persons. Our systematic review aimed to assess transmission risk for measles after SVF. We searched PubMed, Embase, and Web of Science databases from their inception dates. Inclusion criteria were articles describing persons who were exposed to measles-infected persons who had experienced SVF. Across the included 14 studies, >3,030 persons were exposed to measles virus from SVF cases, of whom 180 were susceptible, indicating secondary attack rates of 0%–6.25%. We identified 109 cases of SVF from the studies; 10.09% (n = 11) of case-patients transmitted the virus, resulting in 23 further cases and yielding an effective reproduction number of 0.063 (95% CI 0.0–0.5). These findings suggest a remarkably low attack rate for SVF measles cases, suggesting that, In outbreak situations, public health management of unvaccinated persons could be prioritized over persons with SVF.
Databáze: Directory of Open Access Journals