ABSTRACT
Given sustained high vaccination coverage and enhanced surveillance for measles, Spain has been free of endemic measles transmission since 2014, achieving elimination certification from the World Health Organization in 2017. In November 2017, measles was introduced through an imported case travelling to the Valencian Community, causing an interregional outbreak. Here, we describe the outbreak using data reported to the national epidemiological surveillance network. The outbreak involved 154 cases (67 males, 87 females) notified in four regions; 148 were laboratory-confirmed and six epidemiologically linked. Most cases were adults aged 30-39 (n = 62, 40.3%) years. Sixty-two cases were hospitalised (40.3%) and 35 presented complications (22.7%). Two thirds of the cases (n = 102) were unvaccinated including 11 infants (≤â¯1 year) not yet eligible for vaccination. The main route of transmission was nosocomial; at least six healthcare facilities and 41 healthcare workers and support personnel were affected. Sequencing of the viral nucleoprotein C-terminus (N450) identified genotype B3, belonging to the circulating MVs/Dublin.IRL/8.16-variant. Control measures were implemented, and the outbreak was contained in July 2018. The outbreak highlighted that raising awareness about measles and improving the vaccination coverage in under-vaccinated subgroups and personnel of healthcare facilities are key measures for prevention of future outbreaks.
Subject(s)
Cross Infection , Measles , Adult , Male , Infant , Female , Humans , Spain/epidemiology , Cross Infection/epidemiology , Cross Infection/prevention & control , Measles/epidemiology , Measles/prevention & control , Measles virus/genetics , Vaccination , Disease Outbreaks/prevention & control , Measles Vaccine/therapeutic useABSTRACT
INTRODUCCIÓN: La introducción de las vacunas conjugadas antineumocócicas ha supuesto un cambio en la epidemiología de la enfermedad neumocócica invasiva (ENI). El objetivo de nuestro estudio ha sido describir la evolución de la ENI en la Comunidad Valenciana durante el periodo 2007-2012. MATERIAL Y MÉTODOS: Estudio descriptivo longitudinal retrospectivo de ENI en la Comunidad Valenciana durante el periodo 2007-2012. Las fuentes de información utilizadas han sido el sistema de Análisis de la Vigilancia Epidemiológica (AVE) y la Red Microbiológica Valenciana (RedMIVA) de la Conselleria de Sanitat. RESULTADOS: La incidencia de ENI ha disminuido entre 2007 y 2012 en todos los grupos de edad, mayoritariamente en menores de 5 años, pasando de 30,5 a 12,3 casos por 105 habitantes (p < 0,001). La neumonía constituye la principal forma de presentación de la enfermedad, con disminución de sus cifras de 6,9 a 4,1 casos por 105 (p < 0,001). Se ha observado una reducción progresiva no significativa de la proporción de casos por serotipos contenidos en la vacuna heptavalente (PCV7), principalmente en menores de 5 años, del 26 al 12% (p = 0,23). Los casos por serotipos adicionales de la vacuna conjugada 13-valente (1, 3, 5, 6A, 7F y 19A) también muestran tendencia descendente, principalmente en menores de 5 años vacunados (52,6% vs 14,3%; p = 0,03), mientras que se incrementa significativamente la proporción de casos por serotipos no vacunales, del 42,3 al 56,7% en población general (p = 0,002), y del 47,4 al 78,6% en menores de 5 años vacunados (p = 0,08). CONCLUSIONES: Los resultados de este estudio muestran una reducción de la incidencia de ENI, con disminución de la proporción de casos producidos por serotipos vacunales e incremento de la proporción de los no vacunales. La vigilancia epidemiológica resulta necesaria para monitorizar la evolución de la enfermedad
INTROCUCTION: The introduction of conjugated anti-pneumonia vaccines has led to a change in the epidemiology of Invasive Pneumococcal Disease (IPD). The aim of this study is to describe the trends in IPD in the Community of Valencia during the period 2007-2012. Material and methods: A retrospective, descriptive and longitudinal study was conducted on IPD in the Community of Valencia during the period 2007-2012, The information sources used were the Epidemiological Surveillance Analysis (Análisis de la Vigilancia Epidemiológica (AVE)) and the Valencian Microbiology Net York (Red Microbiológica Valenciana (RedMIVA)) of the Valencia Health Department. Results: The incidence of IPD decreased between 2007 and 2012 in all age groups, mainly in the under 5 year-olds, dropping from 30.5 cases to 12.3 cases per 105 inhabitants (p < .001). Pneumonia was the principal presentation of the disease, with a decrease in its rates from 6.9 to 4.1 cases per 105 inhabitants (p < .001). A gradual, non-significant, reduction from 26% to 12% (p = .23) was observed in the proportion of cases due to the serotypes contained in the heptavalent vaccine (PCV7), mainly in the under 5 year-olds. The cases due to additional serotypes in 13-valent conjugated vaccine (1, 3, 5, 6A, 7F and 19A) also showed a decreasing trend, mainly in vaccinated under 5 year-olds (52.6% vs 14.3%; p = .03), while the cases due to non-vaccine serotypes significantly increased from 42.3% to 56.7% in the general population (p = .002), and from 47.4% to 78.6% in vaccinated under 5 year-olds (p = .08). Conclusions: The results of this study show a reduction in the incidence of IPD, with a decrease in the proportion of cases produced by vaccine serotypes, and an increase in the proportion of those not vaccinated. Epidemiological Surveillance is necessary to monitor the trends in the disease (AU)
Subject(s)
Humans , Male , Female , Adolescent , Adult , Aged , Child , Child, Preschool , Infant , Middle Aged , Young Adult , Epidemiological Monitoring , Pneumococcal Infections/epidemiology , Time Factors , Spain/epidemiology , Pneumococcal Infections/microbiology , Incidence , Longitudinal Studies , Retrospective StudiesABSTRACT
INTRODUCTION: The introduction of conjugated anti-pneumonia vaccines has led to a change in the epidemiology of Invasive Pneumococcal Disease (IPD). The aim of this study is to describe the trends in IPD in the Community of Valencia during the period 2007-2012. MATERIAL AND METHODS: A retrospective, descriptive and longitudinal study was conducted on IPD in the Community of Valencia during the period 2007-2012, The information sources used were the Epidemiological Surveillance Analysis (Análisis de la Vigilancia Epidemiológica (AVE)) and the Valencian Microbiology Network (Red Microbiológica Valenciana (RedMIVA)) of the Valencia Health Department. RESULTS: The incidence of IPD decreased between 2007 and 2012 in all age groups, mainly in the under 5 year-olds, dropping from 30.5 cases to 12.3 cases per 10(5) inhabitants (p< .001). Pneumonia was the principal presentation of the disease, with a decrease in its rates from 6.9 to 4.1 cases per 10(5) inhabitants (p< .001). A gradual, non-significant, reduction from 26% to 12% (p=.23) was observed in the proportion of cases due to the serotypes contained in the heptavalent vaccine (PCV7), mainly in the under 5 year-olds. The cases due to additional serotypes in 13-valent conjugated vaccine (1, 3, 5, 6A, 7F and 19A) also showed a decreasing trend, mainly in vaccinated under 5 year-olds (52.6% vs 14.3%; p=.03), while the cases due to non-vaccine serotypes significantly increased from 42.3% to 56.7% in the general population (p=.002), and from 47.4% to 78.6% in vaccinated under 5 year-olds (p=.08). CONCLUSIONS: The results of this study show a reduction in the incidence of IPD, with a decrease in the proportion of cases produced by vaccine serotypes, and an increase in the proportion of those not vaccinated. Epidemiological Surveillance is necessary to monitor the trends in the disease.
Subject(s)
Epidemiological Monitoring , Pneumococcal Infections/epidemiology , Adolescent , Adult , Aged , Child , Child, Preschool , Female , Humans , Incidence , Infant , Longitudinal Studies , Male , Middle Aged , Pneumococcal Infections/microbiology , Retrospective Studies , Spain/epidemiology , Time Factors , Young AdultABSTRACT
La incidencia del sarampión descendió hasta llegar a ser una notificación esporádica e infrecuente en la última década. La reemergencia de la enfermedad alcanzó 744 casos en 2012, tasa de 14,50 × 105habitantes.Se aplicó un diseño clásico en Vigilancia de Salud Pública: análisis retrospectivo de incidencia acumulada y características de los sujetos afectados. Se cruzaron los datos de encuesta con los de la Red Microbiológica Valenciana (RedMIVA).En total, 976 casos de sarampión fueron confirmados en el período epidémico 2011-2012. La distribución temporal muestra 3 ondas de amplitud constante: 12 a 15 semanas. La proporción de sujetos no vacunados y con estado vacunal desconocido alcanzó el 85% de los casos. Se documentaron 25 brotes, 499 casos asociados; en 7 de 10 brotes comunitarios, el inicio ocurrió en población de etnia gitana sin vacunar. En la ciudad de Valencia se aplicó profilaxis postexposición en 32 colegios, observándose bajas coberturas, entre el 63 y el 77%, en 8 centros e inferiores al 50% en 4. La tasa de serologías negativas fue del 12,4%, destacando los menores de 16 meses con el 44,8%. Las cohortes de 20 a 59 años presentaron tasas de negatividad del 13,5 al 5,9%.La epidemia tuvo su origen en la importación de casos a un territorio con insuficiente protección inmunitaria contra el sarampión. Su impacto y desarrollo estuvo condicionado por la cobertura vacunal previa, el patrón social y étnico de diferentes territorios y barrios, y la aplicación extensiva de profilaxis postexposición a contactos escolares y familiares de casos (AU)
Measles incidence declined until becomes a sporadic reporting and infrequent notification in the last decade. The reemergence of the disease reached 744 cases in 2012, a rate of 14.50 × 105 inhabitants. A classic design in Public Health Surveillance was performed: retrospective analysis of cumulative incidence and characteristics of the affected subjects. Those dates were in record linkage with Valencia Microbiology Network (RedMIVA).Finally, 976 cases of measles were confirmed in 2011-2012 epidemic period. Time-line distribution shows three waves with amplitude length on 12-15 weeks. Proportion of unvaccinated or unknown subjects came up to 85% of cases. 25 outbreaks were reported, 499 cases associated. In 7 of the 10 community outbreaks early cases were from Roma population unvaccinated. In the city of Valencia was applied post-exposure prophylaxis in 32 schools and was observed low coverage: between 63% and 77% in 8 schools and less than 50% in 4. Serum negative rate was 12.4% and we highlight the rate under 16 months: 44.8%. Cohorts of 20-59 years had negative rates between 13.5 to 5.9%.The origin of the epidemic was the importation of cases to a territory with inadequate immune protection against measles. Its impact and development was conditioned by previous immunization coverage, the social and ethnic pattern of different areas or quarters and the extensive application of post-exposure prophylaxis at school and family contacts of cases (AU)
Subject(s)
Humans , Measles/epidemiology , Measles virus/pathogenicity , Communicable Disease Control/methods , /epidemiology , Measles Vaccine/administration & dosage , Disease Outbreaks/prevention & controlABSTRACT
La incidencia del sarampión descendió hasta llegar a ser una notificación esporádica e infrecuente en la última década. La reemergencia de la enfermedad alcanzó 744 casos en 2012, tasa de 14,50 × 105 habitantes. Se aplicó un diseño clásico en Vigilancia de Salud Pública: análisis retrospectivo de incidencia acumulada y características de los sujetos afectados. Se cruzaron los datos de encuesta con los de la Red Microbiológica Valenciana (RedMIVA). En total, 976 casos de sarampión fueron confirmados en el período epidémico 2011-2012. La distribución temporal muestra 3 ondas de amplitud constante: 12 a 15 semanas. La proporción de sujetos no vacunados y con estado vacunal desconocido alcanzó el 85% de los casos. Se documentaron 25 brotes, 499 casos asociados; en 7 de 10 brotes comunitarios, el inicio ocurrió en población de etnia gitana sin vacunar. En la ciudad de Valencia se aplicó profilaxis postexposición en 32 colegios, observándose bajas coberturas, entre el 63 y el 77%, en 8 centros e inferiores al 50% en 4. La tasa de serologías negativas fue del 12,4%, destacando los menores de 16 meses con el 44,8%. Las cohortes de 20 a 59 años presentaron tasas de negatividad del 13,5 al 5,9%. La epidemia tuvo su origen en la importación de casos a un territorio con insuficiente protección inmunitaria contra el sarampión. Su impacto y desarrollo estuvo condicionado por la cobertura vacunal previa, el patrón social y étnico de diferentes territorios y barrios, y la aplicación extensiva de profilaxis postexposición a contactos escolares y familiares de casos
Measles incidence declined until becomes a sporadic reporting and infrequent notification in the last decade. The reemergence of the disease reached 744 cases in 2012, a rate of 14.50 × 105 inhabitants. A classic design in Public Health Surveillance was performed: retrospective analysis of cumulative incidence and characteristics of the affected subjects. Those dates were in record linkage with Valencia Microbiology Network (RedMIVA). Finally, 976 cases of measles were confirmed in 2011-2012 epidemic period. Time-line distribution shows three waves with amplitude length on 12-15 weeks. Proportion of unvaccinated or unknown subjects came up to 85% of cases. 25 outbreaks were reported, 499 cases associated. In 7 of the 10 community outbreaks early cases were from Roma population unvaccinated. In the city of Valencia was applied post-exposure prophylaxis in 32 schools and was observed low coverage: between 63% and 77% in 8 schools and less than 50% in 4. Serum negative rate was 12.4% and we highlight the rate under 16 months: 44.8%. Cohorts of 20- 59 years had negative rates between 13.5 to 5.9%. The origin of the epidemic was the importation of cases to a territory with inadequate immune protection against measles. Its impact and development was conditioned by previous immunization coverage, the social and ethnic pattern of different areas or quarters and the extensive application of post-exposure prophylaxis at school and family contacts of cases
