Epidemic Dynamics of Vibrio parahaemolyticus Illness in a Hotspot of Disease Emergence, Galicia, Spain.

Galicia in northwestern Spain has been considered a hotspot for Vibrio parahaemolyticus infections. Infections abruptly emerged in 1998 and, over the next 15 years, were associated with large outbreaks caused by strains belonging to a single clone. We report a recent transition in the epidemiologic pattern in which cases throughout the region have been linked to different and unrelated strains. Global genome-wide phylogenetic analysis revealed that most of the pathogenic strains isolated from infections were associated with globally diverse isolates, indicating frequent episodic introductions from disparate and remote sources. Moreover, we identified that the 2 major switches in the epidemic dynamics of V. parahaemolyticus in the regions, the emergence of cases and an epidemiologic shift in 2015-2016, were associated with the rise of sea surface temperature in coastal areas of Galicia. This association may represent a fundamental contributing factor in the emergence of illness linked to these introduced pathogenic strains.

La vigilancia en España 3 años después de la entrada en vigor de la Ley General de Salud Pública / Surveillance in Spain 3 years since the enactment of the Public Health Law

En 2014, el Grupo de Trabajo de Vigilancia Epidemiológica de la Sociedad Española de Epidemiología llevó a cabo un estudio descriptivo con el fin de evaluar el desarrollo de la Ley General de Salud Pública, promulgada en España en 2011. Se remitió una encuesta a las 19 comunidades y ciudades autónomas para evaluar la existencia de sistemas de información y otros aspectos de los distintos apartados de vigilancia incluidos en la ley. Todas disponían de un sistema de información para enfermedades transmisibles y en seis para condicionantes sociales; 18 vigilaban al menos una enfermedad crónica y 14 alguno de sus determinantes. El 100% analizaba sistemáticamente la información procedente de la vigilancia de las enfermedades transmisibles. Hay margen de mejora para la vigilancia de la salud pública en España. La acción debe ir dirigida a los principales problemas de salud (AU)

In 2014, the Epidemiological Surveillance Working Group of the Sociedad Española de Epidemiología (Spanish Society of Epidemiology), carried out a descriptive study in order to evaluate the level of development of the Spanish Public Health Law since its enactment in 2011. A survey collecting data on the existence of information systems and other aspects pertaining to each surveillance section included in the law was sent to all 19 autonomous communities and cities. All regional authorities reported the presence of an information system for communicable diseases, and six also reported an information system for social factors. 18 reported that at least one chronic disease was subject to surveillance and 14 confirmed surveillance of some of its determinants. They all systematically analysed the data derived from the communicable diseases. There is room for improvement in Public Health surveillance in Spain, and action should be aimed at the main health problems (AU)

Confirmed case of Zika virus congenital infection, Spain, March 2016.

We describe Zika virus (ZIKV) vertical transmission in an imported case in Spain, in a 17-week pregnant woman. ZIKV IgG, IgM and RNA were detected in serum in week 17. At 19 weeks, ultrasound scan revealed fetal malformations and ZIKV was detected in the amniotic fluid. Pregnancy was terminated at week 21; autopsy of the fetus revealed bilateral hydrocephalus, brain microcalcifications and arthrogryposis multiplex congenita. ZIKV was detected in the umbilical cord and brain tissue.

[Surveillance in Spain 3 years since the enactment of the Public Health Law]. / La vigilancia en España 3 años después de la entrada en vigor de la Ley General de Salud Pública.

In 2014, the Epidemiological Surveillance Working Group of the Sociedad Española de Epidemiología (Spanish Society of Epidemiology), carried out a descriptive study in order to evaluate the level of development of the Spanish Public Health Law since its enactment in 2011. A survey collecting data on the existence of information systems and other aspects pertaining to each surveillance section included in the law was sent to all 19 autonomous communities and cities. All regional authorities reported the presence of an information system for communicable diseases, and six also reported an information system for social factors. 18 reported that at least one chronic disease was subject to surveillance and 14 confirmed surveillance of some of its determinants. They all systematically analysed the data derived from the communicable diseases. There is room for improvement in Public Health surveillance in Spain, and action should be aimed at the main health problems.

Epidemiological investigation of a foodborne outbreak in Spain associated with U.S. West Coast genotypes of Vibrio parahaemolyticus.

We describe an outbreak of seafood-associated Vibrio parahaemolyticus in Galicia, Spain in on 18th of August 2012 affecting 100 of the 114 passengers travelling on a food banquet cruise boat. Epidemiological information from 65 people was available from follow-on interviews, of which 51 cases showed symptoms of illness. The food items identified through the questionnaires as the most probable source of the infections was shrimp. This product was unique in showing a statistically significant and the highest OR with a value of 7.59 (1.52-37.71). All the nine strains isolated from stool samples were identified as V. parahaemolyticus, seven were positive for both virulence markers tdh and trh, a single strain was positive for trh only and the remaining strain tested negative for both trh and tdh. This is the largest foodborne Vibrio outbreak reported in Europe linked to domestically processed seafood. Moreover, this is the first instance of strains possessing both tdh+ and trh+ being implicated in an outbreak in Europe and that a combination of strains represent several pathogenicity groups and belonging to different genetic variants were isolated from a single outbreak. Clinical isolates were associated with a novel genetic variant of V. parahaemolyticus never detected before in Europe. Further analyses demonstrated that the outbreak isolates showed indistinguishable genetic profiles with hyper-virulent strains from the Pacific Northwest, USA, suggesting a recent transcontinental spread of these strains.

Incidencia y factores de riesgo de gastroenteritis en los peregrinos del Camino de Santiago durante el verano de 2008 en el camino francés / Incidence and risk factors for acute gastroenteritis among pilgrims following the French way to Santiago de Compostela (Spain) in summer 2008

Objetivos Conocer la incidencia de gastroenteritis aguda en los peregrinos del Camino de Santiago, los factores de riesgo asociados y su caracterización microbiológica. Métodos Se diseñaron dos estudios simultáneos, uno transversal mediante encuestas autocumplimentadas de peregrinos llegados a Santiago y otro de casos y controles a los peregrinos en el camino. Se hizo un análisis multivariado mediante regresión logística. Resultados En el estudio transversal la densidad de incidencia fue de 23,5 episodios de gastroenteritis aguda por 1.000 peregrinos-día (intervalo de confianza del 95% [IC95%]: 18,9–29,4/103). En el estudio de casos y controles los factores de mayor riesgo fueron la edad <20 años (odds ratio [OR]=4,72; IC95%: 2,16–10,28), viajar en grupo (tres personas o más) (OR=1,49; IC95%: 0,98–2,28) y consumir agua no embotellada (OR=2,09; IC95%: 0,91–4,82). Norovirus fue el microorganismo aislado con más frecuencia (56%).Conclusiones Ser peregrino menor de 20 años, realizar el camino en grupo y consumir agua no embotellada se asocian con un mayor riesgo de presentar gastroenteritis aguda (AU)

Objectives To determine the incidence of acute gastroenteritis in pilgrims on St. James’ Way, as well as associated risk factors and microbiological characteristics. Methods Two studies were designed simultaneously: a cross-sectional study through self-completed questionnaires among pilgrims reaching Santiago, and a case-control study of pilgrims traveling along the Way. Multivariate analysis was performed using logistic regression. Results In the cross-sectional study, the incidence rate was 23.5 episodes of acute gastroenteritis/103 pilgrims-day (95% CI: 18.9–2.4/103). In the case-control study, the major risk factors were age <20 years (OR=4.72; 95% CI: 2.16–10.28), traveling in groups (three or more) (OR=1.49; 95% CI: 0.98–2.28), and drinking unbottled water (OR=2.09; 95% CI: 0.91–4.82). The most frequent etiologic agent was norovirus (56%).Conclusions Age less than 20 years, traveling in groups and drinking unbottled water were important risk factors for acute gastroenteritis (AU)

[Incidence and risk factors for acute gastroenteritis among pilgrims following the French way to Santiago de Compostela (Spain) in 2008]. / Incidencia y factores de riesgo de gastroenteritis en los peregrinos del Camino de Santiago durante el verano de 2008 en el camino francés.

OBJECTIVES: To determine the incidence of acute gastroenteritis in pilgrims on St. James' Way, as well as associated risk factors and microbiological characteristics. METHODS: Two studies were designed simultaneously: a cross-sectional study through self-completed questionnaires among pilgrims reaching Santiago, and a case-control study of pilgrims traveling along the Way. Multivariate analysis was performed using logistic regression. RESULTS: In the cross-sectional study, the incidence rate was 23.5 episodes of acute gastroenteritis/10³ pilgrims-day (95% CI: 18.9-2.4/10³. In the case-control study, the major risk factors were age <20 years (OR=4.72; 95% CI: 2.16-10.28), traveling in groups (three or more) (OR=1.49; 95% CI: 0.98-2.28), and drinking unbottled water (OR=2.09; 95% CI: 0.91-4.82). The most frequent etiologic agent was norovirus (56%). CONCLUSIONS: Age less than 20 years, traveling in groups and drinking unbottled water were important risk factors for acute gastroenteritis.