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Salud pública Méx ; 49(5): 337-344, sep.-oct. 2007. graf
Article in Spanish | LILACS | ID: lil-465594

ABSTRACT

OBJETIVO: Describir los cambios en los patrones de transmisión de rubeola en México. MATERIAL Y MÉTODOS: Se analizó la incidencia durante el periodo 1990 a 2005 y se calcularon la tendencia por regresión lineal simple y el corredor endémico por transformación logarítmica de la media geométrica de las tasas de incidencia mensual y recorridos superior e inferior por IC95 por ciento. RESULTADOS: La morbilidad mostró una tendencia estable de 1990 a 1998 y descendente de 1999 a 2005 (r=-0.88, r²=0.77), con disminución acumulada de 97.1 por ciento. Además, se observaron la atenuación de la variación estacional, la interrupción transitoria de transmisión en 13 estados y el aumento de la proporción de casos en personas de 15 a 44 años y menores de un año, después del inicio de la vacunación antes de los siete años y de la estrategia combinada de inmunización (niños y adultos), respectivamente, con reducción de la incidencia en ambos grupos. CONCLUSIONES: El reforzamiento de la vigilancia y la vacunación sistemática y suplementaria favorecerá la interrupción endémica y la propuesta de su eliminación continental para 2010.


OBJECTIVE: To describe changes in the transmission patterns of rubella in Mexico. MATERIAL AND METHODS: An analysis of rubella incidence during 1990-2005 was performed to estimate the morbidity trend through a simple linear regression model. Endemic mapping was carried out by logarithmic transformation of the geometric mean of monthly incidence rates and 95 percent CI to estimate high and low endemic ranges. RESULTS: A stable trend was observed in morbidity during 1990-1998 ,descending during 1999-2005 (r=-0.88, r²=0.77), with a 97.1 percent cumulative decrease. Attenuation during seasonal variation, temporary interruption of transmission in 13 states and increase in the proportion of cases in 15-44 year-olds as well as in children less than one year of age, have been observed respectively after starting vaccination of children less than seven years of age and the implementation of combined strategy (children and adults) for rubella immunization, with incidence decrease in both groups. CONCLUSION: Reinforcement of surveillance and routine-supplemental immunization activities would favor the interruption of endemic rubella and contribute to the continent-wide elimination proposal for 2010.


Subject(s)
Adolescent , Adult , Child , Child, Preschool , Female , Humans , Infant , Male , Middle Aged , Pregnancy , Rubella/epidemiology , Infectious Disease Transmission, Vertical , Disease Transmission, Infectious , Disease Outbreaks , Immunologic Surveillance , Incidence , Mexico/epidemiology , Morbidity/trends , Pregnancy Complications, Infectious/epidemiology , Pregnancy Complications, Infectious/prevention & control , Retrospective Studies , Rubella Vaccine , Rubella/prevention & control , Rubella/transmission , Vaccination/statistics & numerical data , Vaccination
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