[An epidemic outbreak of measles in a rural area].
OBJECTIVE
Analysis of an outbreak of measles among a partially vaccinated school population: the epidemiology, the effectiveness of the control measures and the efficacy of the vaccine (EV).


METHODS
A descriptive study and cohorts study.


METHODS
Primary Care in the borough of Sant Andreu de la Barca.


METHODS
The school population of Sant Andreu de la Barca.


RESULTS
The outbreak lasted three months and twenty days, with 95 cases overall. The most affected age group was form 4 to 10. 8.4% presented complications. Children were infected at school in 87% of the cases. The overall infection rate of the population between 0 and 15 was 2.4%. 36% of the cases had been correctly immunized and 43% were preventable cases. Vaccine coverage contacts was 67%. 84% of the susceptible contacts were vaccinated. Immunization status and immunization age of 323 out of 500 pupils was studied for the EX analysis. Global EV was 66% (42-80), 58% (13-80) for those immunized, between 12-14 month of age and 71% (43-85) for those immunized after the 15 month of age.


CONCLUSIONS
In order to eradicate the autoctonous measles an increase in immunization coverage, an improvement in the epidemiologic surveillance, and in the outbreak control measures are needed.
Departament de Sanitat i Seguretat Social, Generalitat de Catalunya.
M L
ML
de la Puente
R
R
Corio
J
J
Alvarez
C
C
Planas
R
R
Isalt
M
M
Marzo
D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D015331:Cohort Studies; D016001:Confidence Intervals; D004196:Disease Outbreaks / Q000706:statistics & numerical data; D006801:Humans; D007223:Infant; D008457:Measles / Q000453:epidemiology* / Q000517:prevention & control; D008458:Measles Vaccine / Q000276:immunology; D011159:Population Surveillance; D012307:Risk Factors; D012424:Rural Population / Q000706:statistics & numerical data; D013030:Spain / Q000453:epidemiology
D008458:Measles Vaccine