Now showing items 1-7 of 7

    • Comentarios sobre la clasificación del retardo mental en la CIE 

      Wortis, Joseph (s.d.)
      The International Classification of Diseases (ICD) realistically and pragmatically disclaims logical consistency, completeness or even modernity. It attempts to note all current designations for diseases or conditions ...
    • Isolation of eastern encephalitis virus in Guatemala from sentinel hamsters exposed during 1968 

      Ordóñez, José Víctor; Scherer, William F; Dickerman, Rrobert W (s.d.)
      Three strains of Eastern encephalitis (EE) virus were recovered from sentinel hamsters exposed to flying arthropods during August 1968 in wet, forested, and marshy habitats near the Pasión River in Sayaxché, Department of ...
    • Silicosis con corto tiempo de exposición 

      Cosio, Gabriel (s.d.)
      A study made of 1,901 cases of silicosis, in various stages, coming from mines located at different altitudes. Of these, 763 were a micronodular form of silicosis, 295 were macronodular, 253 were confluent and 590 were ...
    • Ecología del parasitismo en el hombre 

      Neghme, Amador; Silva, Roberto (s.d.)
      Three closely related factors play a role in parasitic infections: the parasite, the host and the environment. To establish endemicity, certain biological and ecological conditions that act on the parasite and its host ...
    • Aislamiento del virus de la encefalitis Venezolana de un murciélago frugívoro (artibeus turpis) en México 

      Wong-Chia, C; Scherer, William F (s.d.)
      Venezuelan encephalitis was first recognized as a disease of equines but recent VE virus infections have occurred in epidemic porportions in human populations, and the virus has been isolated from a number of animals. This ...
    • El saneamiento del medio en la lucha contra el cólera 

      Araoz, J. de; Subrahmanyam, D. V (s.d.)
      Contaminated water is an important vehicle for the rapid spread of a cholera epidemic; insanitary personal and food habits of the population are largely responsible for the persistence and intensification of transmission ...
    • Deficiencia de hierro en el embarazo y en la infancia 

      Sánchez-Medal, Luis (s.d.)
      Pregnancy and infancy are the most critical physiological stages for iron nutrition. During the third trimester of pregnancy the daily iron requirement is from 0.7 to 0.8 mg; during the first year of life the daily requirement ...