[Anti-Brucella antibody seroprevalence in blood donors for therapeutic ends at three blood banks of the Mexican Institute of Social Security].

Introduction: To determine seroprevalence for Brucella sp. in blood donors, a serologic study was carried out at three blood banks of the Instituto Mexicano del Seguro Social (IMSS).

Methods: 500 blood samples were taken from selected blood donors.

[Nosocomial infection surveillance: experience at a cardiology hospital in Mexico].

Objective: To describe the results of the Nosocomial Infection surveillance program at the Cardiology Hospital in Centro Médico Nacional Siglo XXI of the Mexican Social Security Institute.

Methodology: To inform of the epidemiologic follow-up results from January 2000 to July 2003. Global frequency, infection rates by infection site, hospital services, and frequency of most common microorganisms were estimated.