Centers for Disease Control and Prevention
Centers for Disease Control: Lo Que Debe Saber Y Hacer Sobre La Vacunacion
Here you will find general rules and guidelines to follow if someone that you're in close proximity to gets the smallpox vaccination. This site is also available in English.
Centers for Disease Control and Prevention
Centers for Disease Control: Personas Que No Deben Recibir La Vacuna Contra La Viruel
This site covers what type of people should not get the smallpox vaccine. This information is also available in English.