[The 25th anniversary of variola eradication in Mexico. I. Introduction].
D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008800:Mexico; D012899:Smallpox / Q000266:history* / Q000276:immunology / Q000517:prevention & control; D012900:Smallpox Vaccine / Q000266:history*; D014611:Vaccination / Q000266:history
D012900:Smallpox Vaccine
Vigesimoquinto aniversario de la erradicación de la viruela en México. I. Introduccion.