Introduction: there are more than 1.1 billion smokers all over the world, and it has been recognized that tobacco use causes seven deaths every minute. In Mexico, 15 million people are current smokers, and 47 persons die every day because of tobacco use. Few studies have been carried out in Latin America with respect to tobacco use. For instance, in Havana, Cuba, prevalence figures for smokers were 32% for physicians and 46% for nurses. In Mexican health institutions, the prevalence of tobacco use was 28%.Objectives: 1. to determine the prevalence of tobacco use in teachers, students, and workers in the Health Sciences Area within Universidad Autónoma de Zacatecas (UAZ), and 2. To compare prevalence indicators in the aforementioned areas comparing them to the figures found in the Academic Units that make up the health Sciences Area in UAZ.Material and Method: this is a co...

Introduction: there are more than 1.1 billion smokers all over the world, and it has been recognized that tobacco use causes seven deaths every minute. In Mexico, 15 million people are current smokers, and 47 persons die every day because of tobacco use. Few studies have been carried out in Latin America with respect to tobacco use. For instance, in Havana, Cuba, prevalence figures for smokers were 32% for physicians and 46% for nurses. In Mexican health institutions, the prevalence of tobacco use was 28%.Objectives: 1. to determine the prevalence of tobacco use in teachers, students, and workers in the Health Sciences Area within Universidad Autónoma de Zacatecas (UAZ), and 2. To compare prevalence indicators in the aforementioned areas comparing them to the figures found in the Academic Units that make up the health Sciences Area in UAZ.Material and Method: this is a co...

Objective: To assess the prevalence of Trichinella spiralis in gonadectomized pigs. Material and methods: The study was performed using 9 four-month old pigs, York race, which were divided in three groups: 3 healthy control animals, 3 pigs infected with Trichinella spiralis, and 3 gonadectomized animals that later were infected with T. spiralis. Blood samples were taken from every animal before and after therapy for the detection of anti-T. spiralis antibodies using Western Blot and indirect immunofluorescence techniques. All animals were killed after 6 weeks of being infected with T. spiralis, and tissue samples were obtained for performing assessments using direct methods, such as plate compression and artificial digestion in order to look for the parasite load. Results: Gonadectomized and infected pigs developed an acute presentation of trichinellosis, their parasite lo...

Objective: To assess the prevalence of Trichinella spiralis in gonadectomized pigs. Material and methods: The study was performed using 9 four-month old pigs, York race, which were divided in three groups: 3 healthy control animals, 3 pigs infected with Trichinella spiralis, and 3 gonadectomized animals that later were infected with T. spiralis. Blood samples were taken from every animal before and after therapy for the detection of anti-T. spiralis antibodies using Western Blot and indirect immunofluorescence techniques. All animals were killed after 6 weeks of being infected with T. spiralis, and tissue samples were obtained for performing assessments using direct methods, such as plate compression and artificial digestion in order to look for the parasite load. Results: Gonadectomized and infected pigs developed an acute presentation of trichinellosis, their parasite lo...