outbreak of entamoeba histolytica and giardia lamblia infections in travellers returning from the tropics.of 160 travellers from various regions in italy who had taken part in a five-day organized trip to phuket, thailand, and been accommodated in the same luxury hotel, 17 showed either amebic abscess or colitis. a pretested questionnaire that focused on the consumption of foods and beverages well known to be a source of intestinal infection in endemic areas was available from these 17 patients as well as from 41 out of 74 asymptomatic travellers. stool samples for parasitological examination were a ...19921582688
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