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The effect of targeted wide age range SIAs in reducing measles incidence in the African Region

Periodic measles supplemental immunisation activities (SIAs) increase population immunity and thereby reduce the pool of accumulated susceptible children. They are typically conducted every 2 – 4 years, and most often target children up to five years of age. Between 2012 and 2015, after surveillance...

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Detalles Bibliográficos
Autores principales: Masresha, Balcha, Luce, Richard, Katsande, Regis, Fall, Amadou, Eshetu, Meseret, Mihigo, Richard
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The African Field Epidemiology Network 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5745930/
https://www.ncbi.nlm.nih.gov/pubmed/29296148
http://dx.doi.org/10.11604/pamj.supp.2017.27.3.12176
Descripción
Sumario:Periodic measles supplemental immunisation activities (SIAs) increase population immunity and thereby reduce the pool of accumulated susceptible children. They are typically conducted every 2 – 4 years, and most often target children up to five years of age. Between 2012 and 2015, after surveillance data indicated a shift in the epidemiological profile of measles towards older age groups, 11 countries were supported to conduct wide age range SIAs based on their local epidemiological patterns. Six other countries conducted SIAs with measles-rubella vaccines targeting ages 9 months to 14 years as an initial step of introducing rubella vaccine into the immunization program. In subsequent years, the incidence of confirmed measles dropped significantly in 13 of the 17 countries reviewed. The findings emphasize the importance of well-functioning surveillance systems, and the benefits of using of surveillance data to determine the specific target age-range for periodic SIAs to accelerate progress towards measles elimination.