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Background: Bordetella pertussis infection remains a public health problem in several developed and developing we describe the epide-miological syndrome cases subsystem special surveillance of whooping cough from 1992 to 2011 at a population with social security. Methods: We obtained special cases subsystem Pertussis surveillance of 1992-2011. Univariate analysis was made of rates, ratios and proportions. Wilson was determined test for proportions to an alpha of 0.05, t-test for mean difference. Results: We appreciate epidemic cycles every three to five years, the average baseline incidence, excluding epidemic years, 0.1 is considered confirmed cases per 100 000 beneficiaries assigned to family medicine, the highest incidence was recorded in 1997 and 2009. The most affected were children under 1 year of age and in outbreaks, the disease occurred at older ages. Conclusions: During the period observed intermediate epidemic cycles 5 and 3 years of age presentation is consistent in other countries. [ABSTRACT FROM AUTHOR]

Despite vaccination against pertussis, there are still a large number of pertussis deaths worldwide. Waning vaccine-induced immunity and the gradual increase in reported incidence among adolescents and adults have supported the role of these age groups in the transmission. Several countries have implemented a booster vaccination in order to reduce transmission and clinical significance. Pertussis is a current public health problem in Mexico. The clinical suspicion in toddlers, adolescents and adults, delayed or incomplete vaccination series and diagnosis confirmation are the most important challenges for pertussis control. The introduction of new vaccination strategies in adults and adolescents as well as pregnant women should improve disease control. [ABSTRACT FROM AUTHOR]

Chronic cough is defined as persistent cough for more than eight weeks without a defined diagnosis. Irwin and other authors have identified sinusitis, asthma and gastroesophageal reflux as the most common causes of chronic cough. Objectives: To know the clinical spectrum and the most common causes of chronic cough, as well as lo perform a comparative analysis with the literature. Material and methods: A retrospective and transversal study was performed analyzing the clinical records of patients attending consultation because of chronic cough at Dr. Jose E. Gonzalez University Hospital at the Autonomous University of Nuevo Leon, and the Clínica Cuauhtemoc y Famosa, in Monterrey, Nuevo Leon, Mexico, from January, 1998, to December, 2000. The main symptoms and signs of each patient were analyzed, as well as the final diagnosis of the cough's cause and the response to treatment. In addition, a comparative analysis of the data found. In this population and those reported by Irwin et al on the main cause of this symptom. For the statistical analysis, multivarianza analysis, x2 test and Mantel Haenszel with 2x2 table were used considering a p < 0 05 as significant. Results: One hundred eight records were reviewed, but only 91 were included. The most common final diagnoses were gastroesophageal reflux in 75 patients (82%), followed by sinusitis in 34 cases (37%) and mixed causes (more than two) in 25 subjects (27%) (p = 0 016). All patients responded properly to specific treatment directed to the identified base-disease, with which symptoms were solved. Conclusions: In our population, unlike described by Irwin, the most frequent cause of chronic cough is gastroesophageal reflux, followed by sinusitis and mixed causes. [ABSTRACT FROM AUTHOR]

El artículo discurre sobre los mitos de los huicholes, un grupo indígena de México, acerca del origen de las enfermedades. La autora describe su creencia de que las enfermedades vienen de los dioses y son causadas por los hechiceros o la pérdida del alma. Se provee un ejemplo de un mito sobre el origen de la tosferina.