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Objective: Campylobacter is considered the most frequent agent of gastroenteritis in humans all around the world. The aim of this study was to know the incidence, trend and seasonality of notified campylobacteriosis cases in Castile and Leon, Spain, from 2008 to 2015. In addition, to describe the type of case and source of notification, and study the influence of age, sex and Campylobacter species on the hospitalization of cases., Methods: Retrospective cross-sectional study with a time series analysis. Data on notified campylobacteriosis cases were collected from the Epidemiological Surveillance System of Castile and Leon (2008-2015). Incidence rates and incidence rate ratios by age, sex and year of notification were calculated. In order to estimate trend and seasonality, a time series analysis was performed using a multiplicative method and adjusted to a linear and exponential model., Results: From 4,330 cases analyzed, 49.4% of children aged under 5 were affected. The ratio of men to women was 1.43 and 61.8% of cases were notified from secondary care. C. jejuni was isolated from 72.3% of samples (n=2,593). Incidence rate ranged from 11.42 cases per 100,000 inhabitants in 2008 to 33.53 in 2015. The seasonality range was from 71.97% (13th four-week period) to 125.54% (9th four-week period). Hospitalization reached 62.5% for people aged 60 or over., Conclusions: A growing trend of notified campylobacteriosis cases is observed in Castile and Leon (2008-2015), mainly in children aged under 5, with a peak in summer months. Males are more affected than females and hospitalization increases with age., Competing Interests: Disclosure The authors report no conflicts of interest in this work.

Background: There has been an important tularemia outbreak recently in Spain, which has prompted a high epidemiological interest. Our objective was to describe the series of tularemia cases with emphasis being paid on clinical characteristics and evolution of the disease., Patients and Method: We describe 27 cases of tularemia studied clinically and epidemiologically (survey of the Health Territorial Service at Burgos). Two cases were seen in December 2000 as isolated forms, while the rest of cases accumulated in form of outbreak between September 1997 and the first months of 1998. We performed a follow-up of patients including a questionnaire (via phone) to assess relapses or disease's consequences and complications., Results: 48% patients were males and patients' mean age was 52 years (27 to 72). 96% patients had handled hares in relation to hunting practices. Main symptoms were weariness (92%), general discomfort (88%), lymph node enlargement (85%) and fever (81%). Skin lesions were seen in 77% patients. A delay in the initial diagnosis was found in 40% cases. Main complications included: lymph node suppuration (25%) and persistent weariness (18%). In patients with and without a diagnostic delay, 62/21% had lymph node enlargement longer than 1 month, 46/7% had adenopathy suppuration (p < 0.05) and 31/7% had persistent weariness, respectively., Conclusions: Clinical and epidemiological features of tularemia are similar to those described in previous reports. The disease behaved in a uniform and benign form without serious or evolutive complications. Diagnostic delay was the main added morbidity factor.

Background: An outbreak of gastroenteritis caused by Salmonella Enteritidis (SE), phagotype 1, reported at a senior citizen living facility in Burgos on November 15, 1999 is discussed. The objective of the research of this outbreak was that of ascertaining the source of infection, the mechanism by which it was transmitted and to propose the suitable measures for preventing any recurrence of this problem., Methods: An observational retrospective cohort study has been made by surveying 106 of a total of 119 residents and 9 employees at the center in question. The Relative Risk of being affected by this disorder has been estimated in terms of the intake of different foods. Logic Regression was employed for calculating the odds ratio adjusted by age, sex and by the intake of foods and wine. The concordance of the clinical diagnosis with the coproculture diagnosis was studied using the Cohen's Kappa index of agreement., Results: A total of 42 individuals reported symptoms (37 residents and 5 employees). The clinical attack rate was 36.5%. Forty-five (45) of the 91 coprocultures performed (82 on residents and 9 on employees) were positive (41 in residents and 4 in employees). The attack rate for cases confirmed by coproculture was 49.5% among those investigated. Fried breaded milk and flour batter sweets was the food product implicated epidemiologically with the onset of the outbreak: RR 3.25 (C.I at 95% 1.10-9.59). The protective effect of the wine (Odds Ratio: 0.68) was not high enough to be statistically significant (p = 0.36). The Kappa index was 0.43 (p < 0.001), which reveals very little agreement between the clinical diagnosis and the coproculture diagnosis., Conclusions: Epidemiological evidence exists of the intake of fired breaded milk and flour batter sweets having been the mechanism for the transmission of the infection, and the food product in question having been stored at room temperature having been the determining contributing factor in the start of the outbreak. This reveals that the best way of preventing this type of outbreaks are clean habits and practices on the part of all those involved in the food-handling sector.