title: [Urbanization, megalopolization and mortality from birth defects in children under five years of age in Mexico].
abstract: OBJECTIVE
  To identify the spatial-geographical relationship between local priority birth defect (BD) mortality in children under five years of age with demographic and economic variables representing megalopolization: urban localities,municipalities with larger populations and population density, and units and total gross output of agriculture, manufacturing and transportation.
  
  
  METHODS
  Thematic maps were produced in the form of polygons and point to their juxtaposition and analysis of spatial correspondence.
  
  
  RESULTS
  Priority municipality concentrations: 98.6% of the localities of 50,000 to 99,999, 100% of the cities of 100,000 inhabitants or more; 84.3% of the total population; the activity and productivity of agricultural (62.7 and 82.2%), manufacturing (83.4 and 96.9%) and of transport (92.2 and 96.8%).
  
  
  CONCLUSIONS
  Priority municipalities concur with those where the processes of urbanization and megalopolization have a more intense effect. There is scientific evidence in the medical literature on the relationship between megalopolization,pollution, and BD. It is proposed that more should be found out about this relationship in Mexico.
authors: Dirección General de Epidemiología, Secretaría de Salud, México. javiervahe@yahoo.com.mx
authors: Javier
authors: J
authors: Valdés Hernández
authors: Sonia
authors: S
authors: Canún Serrano
authors: Aldelmo E
authors: AE
authors: Reyes Pablo
authors: Eduardo
authors: E
authors: Navarrete Hernández
mesh_terms: D002675:Child, Preschool; D000013:Congenital Abnormalities / Q000401:mortality*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008800:Mexico / Q000453:epidemiology; D014504:Urban Health; D014507:Urbanization