Volume 11, Issue 3
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



Field studies in seven villages in representative parts of Guatemala produced evidence of a high community dosage of and a relative infrequency of . Rectal swabs, taken every 2 months from approximately 1,000 children over a period of 2 years and cultured bacteriologically, gave an average infection rate of 6.0% for , with a range from 0 to 17.2%. The rate for Salmonella was 0.2%.

By periodic prevalence determinations, a seasonal increase in infection was identified during March through May, although a secondary autumnal increase sometimes occurred. The major frequency of infection was among children aged 2 to 4 years. Infection rates were higher in the lowlands than in the highlands. Less infection occurred among Indians than among non-Indians.


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