Five cases of infant botulism which occurred during the period from May 1995 to May 1996 in San Luis, Argentina, are reported. Infant botulism was confirmed in all patients by isolation of Clostridium botulinum type A from stool culture and by the toxin assay. Toxin was found in the serum of one of them. All patients required hospitalization with treatment consisting of supportive especially respiratory and nutritional care. At the time of discharge from the hospital, three patients had a good recovery, although two of them had mild difficulties in sucking or constipation. C. botulinum was not detected in samples of honey which had been given to two of the patients.
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