Decrease in the incidence of chickenpox in the Community of Madrid after universal childhood immunization. Years 2001-2015

Varicella vaccine was recommended in the Community of Madrid (CM) at 15months of age between November 2006 and December 2013. The objective was to describe the impact of vaccination on the incidence of varicella in the CM during the period 2001-2015. A descriptive study of cases of varicella reporte...

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Bibliographic Details
Published in:Atención primaria 2018-01, Vol.50 (1), p.53-59
Main Authors: García Comas, Luis, Latasa Zamalloa, Pello, Alemán Vega, Guadalupe, Ordobás Gavín, María, Arce Arnáez, Araceli, Rodero Garduño, Inmaculada, Estirado Gómez, Alicia, Marisquerena, Ester Insúa
Format: Article
Language:Spanish
Subjects:
Adolescent
Chickenpox - epidemiology
Chickenpox - prevention & control
Chickenpox Vaccine
Child
Child, Preschool
Female
Humans
Incidence
Infant
Male
Spain - epidemiology
Time Factors
Urban Health
Vaccination Coverage - statistics & numerical data
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Summary:Varicella vaccine was recommended in the Community of Madrid (CM) at 15months of age between November 2006 and December 2013. The objective was to describe the impact of vaccination on the incidence of varicella in the CM during the period 2001-2015. A descriptive study of cases of varicella reported to the Sentinel Physician Network of the CM and the cases recorded in the Minimum Basic Data Set at hospital discharge was carried out. Total incidence of cases and of hospital admissions were calculated, as well as specific incidence by age and sex. The incidence was 94.0% lower between 2012 and 2013 than between 2001 and 2003. Between 2014 and 2015 the incidence was 61.8% higher than between 2012 and 2013. The highest incidence was observed in children aged 0 to 4years except for 2010-2014, which was exceeded by the incidence in children aged 5 to 9. The trend in hospital admissions was also decreasing, with the highest incidence in children aged 0 to 1year, followed by 1-4years. There has been a significant decrease in the incidence of cases and of hospital admissions by varicella in all age groups after the recommendation to vaccinate at 15months of age, which is compatible with the effectiveness of a dose and its ability to produce immunity group. The withdrawal of this recommendation between 2014 and 2015 has led to an increase in the incidence.
ISSN:1578-1275
DOI:10.1016/j.aprim.2017.01.010