[Acute asthma prevalence in children and teenagers from Merida, Yucatan, Mexico].

Objective: To quantify the number of asthma attacks treated in the emergency room of a public hospital and to study seasonal fluctuations.

Material And Methods: A retrospective survey was conducted in the pediatrician emergency room of General Hospital Agustin O'Horan in Merida, Yucatan, Mexico during one year (January 1 to December 31st, 2005). A total of 7,674 emergency room consultations were registered during a period of one year.