This article examines some of the changes that the Mexican vaccination programs underwent starting in 1943, the year when the National Smallpox Campaign (Campaña Nacional contra la Viruela) was established. It analyzes why a uniform and coordinated vaccination method was adopted to counter the outbreaks of this endemic disease, especially in central Mexico; the actions of its numerous and heterogeneous staff; and the reasons why smallpox vaccination was considered critical to establish a culture of prevention. In summary, the article examines why selective vaccination was chosen and the expansion of the health-education programs, topics that have been seldom addressed in historical research.
vaccination; smallpox; health education