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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]

Objective: to describe an epidemiological study of one case of pertusis. Clinical case: a five-year old boy was diagnosed with pneumonia and he had incomplete DPT vaccination scheme; pertusis was diagnosed by using the PCR technique and culture. An epidemiological study with family contacts was carried out, in which 20 samples for both tests were obtained. These were taken twice. Results: The average age of the family members was 26.5 years, 50% were women, 62% did not have social security and 30% had three doses of DPT. 35% were positive to PCR and, 20% out of these had positive cultures. Conclusions: in children smaller than five years suffering from pneumonia, is relevant to ascertain about DPT vaccination status and to consider the possibility of carrying out an epidemiological study with the family. [ABSTRACT FROM AUTHOR]