[Chagas disease and the transfusional safety in Mexico]

The World Health Organization considers to the American trypanosomiasis a disease with priority attention that cause 45 000 deaths annually. We are celebrating a century of the disease description and the identification of etiologic agent and the transmitter. The universal screen strategy had diminished the risk of transmission by blood transfusion. In this number, Novelo Garza ET AL. described the national prevalence in Mexico through a screen test that led us watch the first geographical image of the disease in the country.